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PG1, PG2 and PG3 Science Combinations | 2027 SEC G2/G3 Physics–Chemistry, Physics–Biology and Chemistry–Biology

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by

eduKate Asia
Three students in school uniforms work through open books at a classroom table, with textbooks and stationery nearby and study notes on the whiteboard behind them.

Which two Science subjects should a child in PG1, PG2 or PG3 study for the 2027 SEC: Physics and Chemistry, Physics and Biology, or Chemistry and Biology? Posting Groups govern entry to Secondary 1, while the student’s actual SEC science pairing follows a specific G-level subject. The 2027 G2 combinations are K223, K224 and K225; the corresponding G3 combinations are K326, K327 and K328.

The names matter. A learner can be confident in Biology but need a different kind of practice in Physics, and an apparently suitable generic Combined Science worksheet can contain the wrong pairing entirely. The correct path begins with the school’s actual offer and the applicable SEAB syllabus, not with a ranking of which combination sounds more prestigious.

This reader-friendly guide explains all six national codes, the different kinds of reasoning involved in the sciences, ways to diagnose errors in schoolwork, and what parents should consider before Secondary 3 subject selection. It is designed to make Science feel understandable and useful, without anxiety about PG1, PG2 or PG3 labels.

Independent eduKateSG education reference. SEAB 2027 G1, G2 and G3 school-candidate catalogues and MOE Full SBB guidance checked October 2026. Always confirm the current school’s subject offerings, practical requirements and examination-year syllabus.

Quick comparison: six official science-combination codes

  • G2 Physics–Chemistry: K223 (old 5105).
  • G2 Physics–Biology: K224 (old 5106).
  • G2 Chemistry–Biology: K225 (old 5107).
  • G3 Physics–Chemistry: K326 (old 5086).
  • G3 Physics–Biology: K327 (old 5087).
  • G3 Chemistry–Biology: K328 (old 5088).
  • G1 Science: distinct SEC entry K123.
  • Helpful next step: use the actual two science names and registered code.

Choose the explanation that fits your question

1. Which Science combinations exist?

The 2027 SEC lists three named two-science combinations at each of G2 and G3: Physics–Chemistry, Physics–Biology and Chemistry–Biology. Each pair has its own code. A child should be prepared for the actual two disciplines on their school record, not a generic collection of Science worksheets.

Example in learning: A learner registered for Chemistry–Biology should not spend the majority of revision on a Physics–Chemistry examination pack.

Useful next step: Write the exact pair and K-code on the folder before choosing any resources. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

2. Posting Group is not the Science subject

PG1, PG2 and PG3 describe admission to Secondary 1. Under Full Subject-Based Banding, a student’s academic subjects are offered at individual G-levels where eligible. The Posting Group label alone cannot tell a parent which upper-secondary Science examination the child will eventually take.

Example in learning: A PG2 entrant may have an approved mixed G2 and G3 subject profile rather than a uniform collection of G2 entries.

Useful next step: Check the timetable and school subject-combination booklet, not only the original PSLE posting result. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

3. G2 Physics–Chemistry: K223

For 2027 SEC, G2 Science (Physics, Chemistry) is K223, with historical N(A)-Level reference 5105. This subject requires both the physical and chemical concepts specified in its own syllabus. Clear reasoning should cover measurement, changes in matter and the relevant scientific relationships.

Example in learning: A child may describe a reaction accurately while missing the slope of a speed–time graph.

Useful next step: Balance review between the two actually examined disciplines instead of treating Chemistry as the entire subject. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

4. G2 Physics–Biology: K224

G2 Science (Physics, Biology) is K224, with old reference 5106. The pair joins physical principles with biological structures, living processes and their relationships. The official syllabus controls the scope, rather than the child’s earlier lower-secondary encounter with Chemistry.

Example in learning: A student who enjoys cells and force diagrams may find this combination attractive if the school offers it.

Useful next step: Use the current K224 guide and keep Physics and Biology learning objectives visibly separate. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

5. G2 Chemistry–Biology: K225

The G2 Chemistry–Biology combination is K225, previously reference 5107. It includes chemical and biological learning, which can reinforce one another when students distinguish the molecular explanation from what happens inside a living system.

Example in learning: A learner describes digestion confidently but does not know how to explain a related chemical reaction.

Useful next step: Identify the Chemistry concept and the Biology concept separately before connecting them. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

6. G3 Physics–Chemistry: K326

At G3, Science (Physics, Chemistry) is K326, with historical code 5086. The subject resembles the G2 pairing in its two named disciplines but follows the distinct G3 syllabus. Families should select resources according to that syllabus and the school’s teaching sequence.

Example in learning: A parent sees a K223 worksheet and assumes it perfectly prepares the child for K326.

Useful next step: Use the 2027 K326 document and school feedback as the guide for appropriate practice. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

7. G3 Physics–Biology: K327

G3 Science (Physics, Biology) is K327, earlier reference 5087. It contains a physical science component and a life science component. Students should not accidentally borrow Chemistry–Biology tasks because both contain the word Biology.

Example in learning: A candidate revises laboratory vocabulary in a Biology booklet but has not practised interpreting forces or energy relationships.

Useful next step: Keep an ordered revision checklist for both disciplines and track which component needs correction. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

8. G3 Chemistry–Biology: K328

G3 Science (Chemistry, Biology) is K328, earlier reference 5088. Although the pair shares some concepts with other combinations, its prescribed course should be read as an examination subject in its own right.

Example in learning: A student enjoys genetics and ecology but also needs to explain conservation of atoms in chemical processes.

Useful next step: Study across both strands and check whether the issue is content, data interpretation or expression. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

9. G1 Science has a different entry

SEAB’s 2027 G1 catalogue lists Science K123. It does not list G1 Physics–Chemistry, Physics–Biology and Chemistry–Biology as three separate named national entries. Lower-secondary exposure can still support curiosity about all three disciplines.

Example in learning: A PG1 learner may explore plants, matter and motion while working through the actual G1 syllabus.

Useful next step: Use the proper K123 curriculum instead of inventing a G1 code to imitate K223. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

10. Why schools may offer different pairs

SEAB identifies national examination subjects, but schools determine which eligible courses and combinations they teach. Timetabling, staff and school-approved offerings matter, so a listed paper does not mean every school must provide it.

Example in learning: A family prefers Physics–Biology, yet the school publishes another set of subject combinations for that intake.

Useful next step: Check the current combination booklet and ask the school about the precise student offer. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

11. Lower-secondary Science is exploratory

Early secondary Science develops methods and core concepts that can inform later subject choices. A student can be intrigued by several science disciplines before selecting a formal combination.

Example in learning: A child loves ecosystems one term and finds energy transfers fascinating the next.

Useful next step: Collect examples of enjoyable school tasks and teacher feedback rather than making a decision from one test. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

12. Three pairs do not mean a hierarchy

There is no universally best Physics–Chemistry, Physics–Biology or Chemistry–Biology choice for every learner. The pair that fits depends on actual interests, school availability, future prerequisites and a sustainable timetable.

Example in learning: Two students prefer different pairs because one enjoys physical models and the other enjoys living systems.

Useful next step: Discuss the academic tasks and admission conditions without attaching status labels. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

13. Physics–Chemistry has complementary questions

Physics often asks about forces, energy and measurable physical relationships, while Chemistry asks about substances, particles and reactions. The overlap can help students appreciate accurate observation and explanation.

Example in learning: A battery-powered device raises questions about energy transfer as well as the properties of materials.

Useful next step: Ask which process is physical, which is chemical and how the two descriptions support one another. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

14. Physics–Biology uses models carefully

Physics develops representations of physical systems, while Biology explains living structures and processes. A useful connection can illuminate a biological process without reducing the organism to an oversimplified mechanical diagram.

Example in learning: A learner uses pressure ideas to discuss a transport system but must still account for the organism’s actual structures.

Useful next step: State where a physical analogy is useful and where its assumptions stop. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

15. Chemistry–Biology connects substances and life

Chemical reactions and molecular ideas can illuminate biological processes when the explanation is scientifically appropriate. Students learn to make connections without confusing the identities of the two disciplines.

Example in learning: A child studies respiration and wants to distinguish chemical change from the organism’s breathing movements.

Useful next step: Name the relevant scale and process before giving the explanation. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

16. Measurement units matter in Physics

A number is meaningful only when its quantity and unit are correct. Motion, energy, force and other physical ideas have different mathematical relationships and dimensions.

Example in learning: A learner reports acceleration in metres per second because the word speed appeared in the question.

Useful next step: Identify the quantity asked for, convert units and check what the answer represents. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

17. Graph axes matter more than appearance

A graph shows a relationship defined by its axes and scales. Slope, area and position may represent different features depending on what is plotted.

Example in learning: A speed–time graph looks steep, so the learner calls the speed itself acceleration.

Useful next step: Read the axes and relevant definitions before using a graph shortcut. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

18. Forces belong to a chosen body

A free-body diagram should show forces on the selected object, not every force in the scene. Identifying the system boundary helps students reason accurately.

Example in learning: A book rests on a table, but the student draws a force acting on the table as though it acts on the book.

Useful next step: Label the chosen body and identify which interactions affect it. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

19. Energy transfer needs a process

Science answers should distinguish transfer, transformation and useful output as required by the syllabus. Everyday phrases may obscure the concept.

Example in learning: A student writes that energy disappears after a fan runs instead of tracing where it was transferred.

Useful next step: Follow the input and output, and use the appropriate conservation idea. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

20. Chemistry observations are not conclusions

The colour, state or gas produced in an experiment may be an observation, while identifying a particular substance requires supporting evidence. The distinction is essential to scientific thinking.

Example in learning: A student sees bubbles in a teacher-approved example and immediately names a gas without any test.

Useful next step: Describe what happened, then show which information justifies identifying the product. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

21. Particle models explain invisible processes

Particle representations can explain diffusion, changes of state and chemical processes, but diagrams are models with specific assumptions.

Example in learning: A learner believes particles expand individually when a substance spreads through a container.

Useful next step: State what the model predicts and how the observation supports it. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

22. Balanced equations respect atoms

Chemical equations represent reactants and products and should preserve the number of atoms for each element. Changing an individual compound’s formula to force a balance is not sound reasoning.

Example in learning: A student changes H2O into H3O when balancing an ordinary school-level equation.

Useful next step: Keep the actual formulae and adjust coefficients as appropriate for the reaction. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

23. Biology begins with structure and function

Students can learn to link the form of a cell, tissue or organ to its actual role. Naming a structure is often only the opening step.

Example in learning: A learner identifies a leaf surface but cannot explain why its structure supports a specified exchange process.

Useful next step: Build one sentence linking structure, function and the relevant conditions. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

24. Photosynthesis separates matter and energy

Photosynthesis uses light energy and material inputs to make products. Students should not confuse the source of energy with the source of carbon or the resulting matter.

Example in learning: A child claims that sunlight becomes all the material in a growing plant.

Useful next step: Trace material inputs and energy inputs separately using an approved diagram. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

25. Respiration and ventilation are distinct

Cellular respiration is a chemical and biological process, while ventilation moves air through respiratory structures in organisms that use them. A correct answer should choose the scale the task asks about.

Example in learning: A student describes chest movements when the question concerns how cells release energy.

Useful next step: Underline the term in the prompt and focus on the correct process. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

26. Ecology demands network reasoning

Ecosystems contain interconnected organisms and environmental constraints. Predictions about population changes should be linked to the actual information provided.

Example in learning: A learner predicts that every predator population will increase after one prey population falls.

Useful next step: Read the food web and qualify conclusions that exceed the evidence. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

27. Fair tests need controlled conditions

Students should distinguish the factor changed from the factors deliberately held constant. Otherwise the comparison may not identify what caused an effect.

Example in learning: Two samples are heated for different times at different temperatures, making the result ambiguous.

Useful next step: List the changed condition, controlled conditions and measured result before explaining. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

28. Practical laboratory work must be supervised

Science practicals can involve chemicals, heat, electricity and biological specimens. Students need school-approved instructions, safe equipment and appropriate supervision.

Example in learning: An online experiment video uses unfamiliar reagents and a learner wants to copy it in the kitchen.

Useful next step: Use approved demonstrations and classroom simulations rather than unsupervised risky experiments. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

29. Both disciplines in a pair need revision

A student may favour one component because it feels enjoyable or familiar, but examination preparation must cover the pair actually registered.

Example in learning: A Physics–Chemistry learner practises Physics every evening and leaves chemical reactions untouched.

Useful next step: Set two modest weekly component goals, adjusting to the teacher’s latest feedback. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

30. A diagnostic check is better than more worksheets

When a student loses marks, the cause might be a missing fact, a confused concept, a calculation error or misreading the question. Each requires different instruction.

Example in learning: A Chemistry–Biology candidate knows most vocabulary but misidentifies what is measured on a table.

Useful next step: Examine one marked response and find the exact failed reasoning step. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

31. Mathematics connects with all three pairs

Graphs, ratios, rates, units and algebra can support Science. The relevant calculation must still reflect the discipline’s actual concept.

Example in learning: A Physics calculation uses a rate, while Biology asks about change in a population over time.

Useful next step: Explain why the chosen mathematical operation matches the relationship. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

32. English reading is part of Science assessment

A Science question may restrict a process to constant temperature, a named sample or a particular condition. Missing one qualifier changes the intended answer.

Example in learning: A student ignores the phrase ‘all other variables held constant’ and describes several effects at once.

Useful next step: Read the command word and limiting conditions before writing an explanation. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

33. Diagrams need truthful labels

An explanatory diagram is useful only when arrows, units and structures accurately represent the process being discussed.

Example in learning: A Biology diagram includes an arrow in the opposite direction from the intended transport.

Useful next step: Trace the process step by step and check each label against the task. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

34. A plausible numerical answer can still be wrong

Numbers produced by a calculator can appear reasonable, even if the student used an unrelated value or wrong unit.

Example in learning: A Physics learner enters a distance in centimetres into a relationship expecting metres.

Useful next step: Write the units next to each term and estimate whether the final result makes sense. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

35. Cause and correlation are different

An observed relationship may suggest a hypothesis without proving a unique cause. Scientific reasoning asks what alternative factors could explain the evidence.

Example in learning: A Biology data set shows two quantities rising together, and the learner claims one must be the cause.

Useful next step: Ask whether another variable or study design could account for the result. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

36. One correct test is not a universal proof

An explanation that works for an easy example needs to be examined under other permitted conditions before being treated as reliable.

Example in learning: A student derives a relationship from one graph but fails when the axes use a different scale.

Useful next step: Test the idea against a second school-provided example and the relevant assumptions. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

37. Subject codes are important for tuition

A tutor needs to know the registered pair and level to design relevant material. A generic class named Combined Science may otherwise spend time on the wrong content.

Example in learning: A school records K327 Physics–Biology but a commercial worksheet assumes K328 Chemistry–Biology.

Useful next step: Share the correct code and school syllabus before additional instruction begins. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

38. A PG1 learner can enjoy every science discipline

A child entering PG1 can ask questions about motion, matter and living things even when the examined G1 Science subject is not split into three paired codes.

Example in learning: A learner becomes curious about a bird’s flight and connects anatomy with forces.

Useful next step: Encourage safe observations and clear explanations at the student’s current learning level. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

39. A PG2 learner may have varied subject levels

Full SBB allows eligible students to study individual subjects at different G-levels. The original PG2 entry does not by itself identify the future Science pair.

Example in learning: A PG2 student’s timetable includes G3 Mother Tongue and G2 Physics–Chemistry.

Useful next step: Treat each subject according to its own level and real school offer. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

40. A PG3 learner need not take all three pure sciences

The national G3 catalogue includes combined Science pairs as well as separate Physics, Chemistry and Biology syllabuses. The school and individual choice determine the actual path.

Example in learning: A PG3 student prefers G3 Chemistry–Biology and wishes to leave room for Humanities or Art.

Useful next step: Compare actual school combinations and post-secondary requirements without ranking the routes. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

41. Subject fit matters more than stereotypes

Some learners love practical measurement; others enjoy organisms, chemical change or mathematics. A meaningful choice reflects the tasks a student willingly returns to.

Example in learning: A learner who enjoys Chemistry–Biology is told Physics–Chemistry is more impressive, despite no relevance to personal plans.

Useful next step: Discuss skills, interests and official options rather than prestige labels. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

42. Post-secondary requirements need direct verification

A future diploma or JC course may specify Mathematics, Science grades or particular subject combinations. These rules depend on the institution, intake year and official admissions route.

Example in learning: A family assumes the presence of Chemistry in K225 guarantees entry to a biomedical course.

Useful next step: Read the receiving institution’s current exact entry requirements. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

43. Science pair choices are not lifelong restrictions

Students can continue learning new scientific areas through later courses and interests, subject to the prerequisites of each formal route.

Example in learning: A student studies Physics–Biology but later develops curiosity about materials science.

Useful next step: Encourage the interest and examine appropriate bridging opportunities without promising automatic admission. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

44. How to plan the Secondary 2 decision

Families should review school combination options, current Science work, Mathematics readiness, genuine interest and the timetable for Secondary 3.

Example in learning: A learner earns a moderate grade yet gives clear verbal explanations; this may suggest a specific writing skill needs attention.

Useful next step: Examine both achievement and learning behaviour before making a subject choice. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

45. How to organise six codes in the family

A simple table can stop confusion between the G2 and G3 versions of the same pair and prevent buying the wrong guide.

Example in learning: Two siblings study different Science levels, and their notes are stored on the same shelf.

Useful next step: Label each folder with the full name, K-code and examination year. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

46. Why old codes are not current registration labels

The former G2 codes 5105, 5106 and 5107 and G3 codes 5086, 5087 and 5088 are cross-references in the 2027 SEAB catalogue.

Example in learning: An old school question booklet is labelled 5088 while the current school record shows K328.

Useful next step: Use the old number to understand historical context, and the current K-code for examination preparation. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

47. A school science revision calendar should be manageable

A useful plan includes short retrieval, worked explanations, teacher feedback and enough time for other subjects and normal rest.

Example in learning: A student has a Maths assessment and two CCA practices in the same week.

Useful next step: Choose two achievable Science review tasks rather than adding hours indiscriminately. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

48. Examination-year documents can change

The 2027 national lists apply to candidates taking SEC in that year. Students entering Secondary 1 in 2027 should recheck the syllabus for their later examination year.

Example in learning: A parent saves K224 materials for four years and assumes no content changed.

Useful next step: Review the relevant SEAB catalogue and school notices when major subject decisions occur. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

49. The happiest first Science task

A student can make genuine progress by explaining what an observation shows, what model applies and where uncertainty remains. The ability to test a claim is valuable in every pair.

Example in learning: A learner notices a change in a school-provided chart and asks which explanation fits the data.

Useful next step: Invite the child to state the evidence before the conclusion, and recognise the improvement. The goal is a supported scientific explanation rather than rushing through a larger number of questions without understanding.

Questions parents ask about Science combinations

What are the three G2 Science pair codes?

K223 Physics–Chemistry, K224 Physics–Biology, and K225 Chemistry–Biology.

What are the three G3 Science pair codes?

K326 Physics–Chemistry, K327 Physics–Biology, and K328 Chemistry–Biology.

Does G1 have those same three codes?

No. G1 Science is listed as K123 for 2027.

Are G2 K223 and G3 K326 the same examination?

No. Both name Physics–Chemistry, but they are separate G-level syllabuses.

Can PG1 children enjoy Physics?

Yes. Interest and informal learning are not limited by a Posting Group.

Can PG3 learners take combined Science?

G3 combined entries exist; the student’s school offerings and rules determine the actual option.

Does Physics–Biology include Chemistry as an examined component?

The formally named pair is Physics and Biology. Do not automatically use Chemistry preparation as an assessed component.

Does Chemistry–Biology include Physics as an examined component?

The formal pair is Chemistry and Biology, subject to its published syllabus.

Which Science pair should my child choose?

Review actual interest, teacher-marked work, school combinations and later course requirements.

Does every school offer all three pairs?

No such assumption should be made; the school publishes its current options.

Can a student change pair later?

Any change is governed by the school’s approval and offering rules, not an automatic entitlement.

Is combined Science automatically an easy subject?

No. It has specific assessed concepts and requires consistent reasoning.

Can Science vocabulary alone secure marks?

Not reliably. Students must use concepts accurately and answer the question.

Is every exciting online practical safe for home practice?

No. Laboratory work should follow school-approved safe instructions and supervision.

How should parents choose Science tuition resources?

Give the tutor the exact level, two subjects, K-code and examination-year syllabus.

Does Chemistry–Biology guarantee admission to medicine?

No. Post-secondary programmes have separate admissions and subject prerequisites.

Does Physics–Chemistry guarantee an engineering course?

No. Check the relevant institution’s exact requirements.

Can a weak test be repaired without switching subjects?

Often a targeted diagnosis and practice plan is worth trying before a broad pathway change.

What if the current year is after 2027?

Use the official examination-year syllabus that applies to the child.

Where can I check every Science pair?

SEAB’s 2027 G2 and G3 school-candidate subject catalogues.

Match your science pair to the correct eduKateSG guide

The linked study guides below correspond to the exact 2027 G2 and G3 science pair. Use them with the broader parent pathways and study index, and always check the subject code printed on the student’s current school paperwork.

Official SEAB and MOE references

A useful science conversation at home

Ask the learner to explain one observation from the subject they actually study, identify the evidence and describe the scientific model being used. A careful answer with a sensible limitation reveals more understanding than an answer recited without context.

PG1, PG2 and PG3 are starting admission groups. Curiosity, capable scientific reasoning and steady learning can grow in every school pathway, and a good subject combination is the one that fits the learner’s real needs and available options.