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PG1, PG2 and PG3: How to Read the 2027 SEC Certificate | G1, G2, G3 Subjects, Grades and Mapping

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by

eduKate Asia
eduKate Secondary students reviewing open books for How Super Intelligence Works: the SI Failure Map.

PG1, PG2 and PG3 are not separate Singapore–Cambridge Secondary Education Certificate (SEC) levels. They are Posting Groups used when entering Secondary 1. From 2027, the SEC records the actual G1, G2 and G3 subjects a student sits, including mixed combinations. The subject name, level, grade and examination year are the important details.

SEAB’s 2027 framework introduces one national certificate in place of the separate N(T), N(A) and O-Level certificates. Students still take different examination papers at the relevant subject levels. When particular progression calculations require it, SEAB publishes official grade mappings from G3 to G2 and from G2 to G1.

For parents, reading the SEC does not need to be complicated. Begin with what the student actually took, keep the original result, apply a mapping only when an official formula requires it, and then consider the further-learning routes for which the student is eligible. This guide walks through that process with friendly examples and accurate boundaries.

Independent eduKateSG guide; official SEAB SEC overview and 2027 subject catalogues, plus MOE’s 2028 admissions announcements, checked on 16 October 2026. The examination authority and current admissions exercise documents govern all formal decisions.

SEC results in one minute

  • PG1, PG2, PG3: Secondary 1 admission labels, not three SEC paper types.
  • G1, G2, G3: levels of particular subjects examined by SEC.
  • Certificate: a single record of the subjects and levels actually taken.
  • G3 to G2 mapping: A1–B3 → 1; B4–C6 → 2; D7 → 3; E8 → 4; grade 9 → 5, as specified in SEAB’s table.
  • G2 to G1 mapping: grades 1–3 → A; 4 → B; 5 → C; 6 → D.
  • Never forget: a mapped grade is for prescribed progression calculations; it does not replace the original examination result.

The full parent guide

1. Posting Group is not printed as an examination level

Posting Group 1, 2 or 3 is used for secondary school admission. Once the student enters the school, the practical academic record is the subject and its level: G1, G2 or G3. The SEC is organised around those examined subject entries, rather than a separate PG1, PG2 or PG3 paper.

An ordinary family example: A student might enter via PG2, then take English at G3, Mathematics at G2 and Computing at G1, according to school offers. Reading the certificate means checking all three entries on their own terms.

A practical next step: Ask the school to confirm the latest registered subjects, exact level and relevant examination-year code. Put those facts on a one-page subject record before discussing further study.

Important distinction: An example combination is for explanation only. The actual permitted subjects depend on school decisions, eligibility and national examination rules.

2. What the SEC changes in 2027

The Singapore–Cambridge Secondary Education Certificate begins with the 2027 graduating cohort, replacing the separate N(T), N(A) and O-Level examinations. SEAB describes the SEC as a single certificate that records the subjects and subject levels actually taken.

An ordinary family example: Instead of telling a family that a child has just one academic stream label, the document identifies different subject entries so their individual achievements can be recognised.

A practical next step: Use the examination-year SEAB website as the source of truth. Families with children sitting an earlier examination should not treat 2027 SEC arrangements as retroactive.

Important distinction: The SEC does not abolish different examination demands. Students continue sitting papers corresponding to their registered G-levels.

3. One certificate can contain different levels

An SEC may include a mixture of G1, G2 and G3 subjects when the student has offered an eligible combination. This reflects Full Subject-Based Banding’s intention to recognise different areas of interest and readiness.

An ordinary family example: Imagine three lines: G3 English Language, G2 Mathematics and G1 Computing. Their presence together is not an error. They describe the actual learning programmes the student followed.

A practical next step: Read each subject line separately, then check which courses or admissions criteria recognise that subject and level. A mixed record needs course-specific interpretation.

Important distinction: A certificate with a mix of levels should not be simplified into one imaginary overall G-number.

4. What G1 means on a result

G1 is the subject level corresponding to the former Normal (Technical) standard. At the 2027 SEC, G1 examined subjects use their own published syllabus and grade scale.

An ordinary family example: A student who receives a G1 Science result has been examined against the registered G1 Science syllabus, not a generic science quiz that also applies to G2 and G3.

A practical next step: Use the relevant SEAB G1 paper and school teacher feedback when discussing what skills the learner has demonstrated.

Important distinction: A G1 examination grade belongs to the G1 subject; it is not automatically a G2 or G3 grade.

5. What G2 means on a result

G2 corresponds to the former Normal (Academic) standard. It is an individual examination subject level, and the student’s record can include other subjects at G1 or G3.

An ordinary family example: A learner may be strong at reading and elect eligible language study at G3 while taking a different subject at G2. The result can accurately show both.

A practical next step: When you compare a subject against a course’s requirements, note the level as carefully as the grade. Eligibility tables may require particular levels for particular subject positions.

Important distinction: G2 does not mean the student sits a PG2 examination. Posting and examination terminology must remain separate.

6. What G3 means on a result

G3 corresponds to the former Express or O-Level subject standard. The 2027 SEC includes G3 subject papers with separate syllabus codes and assessment requirements.

An ordinary family example: An interest in deeper Mathematics may lead a learner to G3 Mathematics while another subject is followed at a different eligible level. The academic profile is more informative than a general label.

A practical next step: Match the subject title and year, then examine the grade and prerequisites of the course under consideration.

Important distinction: G3 on a single subject does not mean every other subject was also studied or examined at G3.

7. Why subject codes matter

SEAB lists each 2027 G-level syllabus under its own subject title and code. Codes help identify the correct official examination paper and avoid confusion with old N- and O-Level references.

An ordinary family example: English Language appears as K100 at G1, K200 at G2 and K300 at G3 for 2027. The subject name is familiar, but the code and syllabus are not identical.

A practical next step: Keep the code on the revision folder and double-check any older specimen or tuition materials before using them as exact-format preparation.

Important distinction: The same printed subject name does not establish identical scope, assessment or marking requirements across levels.

8. Examples from the 2027 Science catalogue

The official 2027 lists G1 Science K123, combined G2 Science pairings K223 to K225, combined G3 Science pairings K326 to K328, and separate G3 Physics, Chemistry and Biology entries.

An ordinary family example: Someone describing their paper as ‘Science’ could mean different combinations. A future course that specifically requires a named Science subject must be checked carefully.

A practical next step: Find the exact subject title on the certificate and compare it with the course’s minimum entry requirements, not a shortened conversational label.

Important distinction: A G3 combined Science grade is not a record of separately examined G3 Physics and Chemistry subjects.

9. Examples from Mathematics

For 2027, SEAB lists Mathematics as G1 K110, G2 K210 and G3 K310; Additional Mathematics has separate entries at G2 K232 and G3 K311. The word ‘Additional’ is important.

An ordinary family example: A student can enjoy Mathematics and still find Additional Mathematics a distinct academic undertaking with different prerequisite ideas and algebraic techniques.

A practical next step: Record Mathematics and Additional Mathematics as separate subjects and check each current syllabus. Avoid buying an A-Math paper as a substitute for the general Mathematics paper.

Important distinction: Course-entry criteria may treat Mathematics and Additional Mathematics differently. Read the exact subject names required.

10. The certificate is not a rank ordering of people

An examination grade describes performance in particular assessed content at a specified level and time. It is useful for planning; it is not a description of a child’s personality, character or capacity to learn.

An ordinary family example: One student may do well in an applied subject and another in a language. Those are concrete achievements that can help identify a suitable next route.

A practical next step: Discuss what a student can do, which programmes they may enter and what additional foundations they want to build, rather than assigning a permanent identity based on a result.

Important distinction: The official certificate has a specific administrative purpose. It cannot represent every valuable skill or interest a student has developed.

11. Why SEAB provides grade mapping

When certain admissions or progression calculations require a grade from a different subject level, SEAB specifies mapping rules. These allow prescribed aggregate calculations to be made consistently.

An ordinary family example: A G3 result may be converted to the G2 grade scale for an authorised calculation. That does not rewrite the history of which G3 syllabus the child sat.

A practical next step: Read the admissions formula first. Only apply a grade mapping when the current official rule specifically calls for it.

Important distinction: Mapping is for approved progression or aggregate computations. It is not a universal statement that two different examination performances are identical.

12. The G3-to-G2 mapping table

SEAB publishes this G3-to-G2 map: A1, A2 or B3 maps to G2 grade 1; B4, C5 or C6 maps to G2 grade 2; D7 maps to grade 3; E8 maps to grade 4; and grade 9 maps to grade 5. The scale includes a G2 grade 6 without a listed G3 equivalent in this table.

An ordinary family example: For an authorised G2-level calculation, G3 English at B4 corresponds to mapped G2 grade 2. The certificate still reports the actual G3 English result.

A practical next step: Check the correct table directly on SEAB’s SEC overview whenever calculating a score. Note the destination grade scale and the particular admission formula.

Important distinction: Do not present the mapped grade as a second examination grade that the student separately earned at G2.

13. The G2-to-G1 mapping table

SEAB’s G2-to-G1 table maps G2 grades 1, 2 and 3 to G1 grade A; G2 grade 4 to B; G2 grade 5 to C; and G2 grade 6 to D. G1 grade E has no corresponding G2 grade in this table.

An ordinary family example: If the approved progression calculation requires a G1-equivalent grade and a student’s eligible G2 result is 4, its mapped G1 value is B.

A practical next step: Use the mapping only within the actual progression framework. A teacher or school guidance officer can help verify the calculation before a family submits choices.

Important distinction: The G1 letter scale and the G2 numerical scale are different. Avoid comparing their symbols directly without the official mapping.

14. Converting from G3 to G1 uses two steps

SEAB explains that where a G3 result needs to be mapped to G1 for progression, the result is first mapped from G3 to G2 and then from G2 to G1. This prevents families from inventing a direct conversion.

An ordinary family example: Suppose a permissible calculation requires a G1-equivalent result from a G3 B4. First G3 B4 maps to G2 grade 2, then G2 grade 2 maps to G1 A.

A practical next step: Write both arrows in your working and check that the particular course allows that subject to count. Mapping eligibility is separate from arithmetic.

Important distinction: A conversion example explains the official table, not an assurance that a particular admissions exercise accepts the subject.

15. Why the source grade remains important

A mapped grade is an administrative value derived for a particular purpose. The student’s official subject level and original grade remain essential facts for course prerequisites and to understand the learning completed.

An ordinary family example: A student with G3 Science B3 and a student with G2 Science grade 1 can yield the same mapped G2 grade in some computations, while their original examinations remain different.

A practical next step: Keep the exact original grade in any family spreadsheet and calculate mapped fields separately. Label the derived column clearly.

Important distinction: Do not erase the original G-level or present converted values as if they were new SEC results.

16. What a pass or certificate means

SEAB’s SEC overview states that a certificate is awarded when a candidate obtains at least one subject grade meeting the specified thresholds: E8 or better at G3, grade 5 or better at G2, or grade D or better at G1.

An ordinary family example: A family could see a set of subject grades with different scales and wonder why the award description names several thresholds. The answer lies in the three individual subject levels.

A practical next step: Read SEAB’s stated certificate award conditions rather than applying one uniform letter or number rule to every examined subject.

Important distinction: Certificate award and admission to a particular JC, polytechnic or ITE programme are different decisions, with additional course requirements.

17. The difference between grades and aggregate points

A subject grade is a single result. An admissions aggregate such as L1R4, ELR2B2 or ELMAB3 combines designated subject positions under a specific set of rules.

An ordinary family example: A student might have six SEC grades, but the formula for a particular course may use only a specified subset. Counting every grade equally can give an incorrect conclusion.

A practical next step: Write the admissions formula in full, then fill each allowed subject position. Apply mapping only where the official guide permits.

Important distinction: A low arithmetic sum calculated from an ineligible subject combination does not create admission eligibility.

18. What the ELMAB3 example teaches

SEAB’s SEC overview gives an illustration of ELMAB3 computations when different subject levels are offered. Its example includes G3 English, Mathematics and Science mapped to G2, alongside G2 Humanities and Chinese; a G1 Computing result is not counted for that formula.

An ordinary family example: The example shows why a student’s certificate can contain more information than any one aggregate uses. A subject not counted in ELMAB3 may still show an achievement.

A practical next step: Compare the subject positions in the intended formula, then check the permitted levels and grade mapping. Use the official example to avoid making assumptions.

Important distinction: Do not infer that a subject excluded from one aggregate will never matter for other courses or learning pathways.

19. What will change for post-secondary applications in 2028

MOE announced that from January 2028 the Post-Secondary Admissions Exercise will allow eligible students with the SEC to apply to different post-secondary routes in a single exercise, subject to their respective criteria.

An ordinary family example: Families can explore several suitable programmes while keeping a clear priority order. They need to distinguish eligibility, preferences and the actual selection or posting outcome.

A practical next step: Before the application period, gather the course list, current minimum entry requirements and the student’s real SEC results. Consult Education and Career Guidance support where useful.

Important distinction: Having one common application exercise does not mean every student is automatically eligible for every course.

20. JC and MI are related but distinct options

Junior Colleges and Millennia Institute both offer pre-university routes, but they have different programme durations and admissions requirements. From the 2028 intake, MOE will use revised L1R4-based JC admissions rules.

An ordinary family example: A student who is interested in A-Level study can compare the pace, programme structure and suitability of different institutions alongside the formal requirements.

A practical next step: Use the official 2028 programme criteria and the student’s actual eligible SEC subjects. Do not rely on historical L1R5 calculations as though they remain unchanged.

Important distinction: A PG3 entry history is not itself a qualification for JC or MI admission. The later examination and course criteria matter.

21. Polytechnic diploma courses have subject prerequisites

Polytechnic admissions use specific grade aggregates, subject requirements and course eligibility rules. MOE announced that from 2028 a G2 subject can be counted for one permitted B position of the revised ELR2B2 calculation, with the last B mapped appropriately.

An ordinary family example: A student interested in a creative, technical or science diploma should check whether the course requires particular English, Mathematics or Science levels and which other grades can count.

A practical next step: Start with the desired programme’s entry rules and work backwards to the acceptable subject levels. This is more informative than beginning with a Posting Group label.

Important distinction: Do not assume that all G2 subjects can substitute for the G3 English or relevant subject positions in Polytechnic Year 1 criteria.

22. The Polytechnic Foundation Programme is a separate route

PFP is a pathway into polytechnic studies for eligible students who meet the programme’s published subject and admissions criteria. It is not a synonym for every polytechnic application.

An ordinary family example: A student who enjoys a hands-on field can research its PFP progression requirements and compare them with direct diploma entry and other educational routes.

A practical next step: Read current MOE and polytechnic PFP eligibility conditions, including relevant G-level grades and subject requirements for the cohort.

Important distinction: A particular PFP place is never determined solely by the original Posting Group. Eligibility and course selection remain essential.

23. ITE offers more than one programme structure

The Institute of Technical Education offers Higher Nitec programmes with different durations and admission routes. The revised post-secondary system recognises students’ actual qualification profiles, not only their age or former school-entry labels.

An ordinary family example: A learner interested in electronics, business, healthcare or design can compare the practical skills and progression opportunities in the relevant programme.

A practical next step: Check the current ITE course requirements and intake-year information. Ask how the qualification can connect to employment or later diplomas.

Important distinction: The name Higher Nitec does not mean one common programme is equally accessible under every subject combination.

24. Why a subject grade can have different roles

A good result can help a student meet a minimum entry requirement, occupy an aggregate position, satisfy a course prerequisite or demonstrate readiness to study a related topic. These are related but different functions.

An ordinary family example: A Mathematics grade might be needed at a particular level for one diploma, while another programme may use the grade only in its aggregate. Reading the entry table shows the difference.

A practical next step: Mark each requirement as must-have, permitted aggregate subject or optional useful background. Seek advice before ruling a pathway in or out.

Important distinction: The admission rules of one programme should not be copied across to an unrelated programme.

25. A certificate is not the same as an offer

An SEC certificate reports examination outcomes. Admission requires an application, eligible choices and a place under the applicable exercise. Both stages matter, but they answer different questions.

An ordinary family example: Two students may have similar grades yet rank institutions or courses differently. Available places and published posting rules affect eventual offers.

A practical next step: When advising a child, separate what they have achieved from what they want to apply for, and check deadlines and selection conditions independently.

Important distinction: No online article can guarantee a future admission outcome from an illustrative score.

26. What parents should preserve in their records

It helps to keep the official certificate, the published admission requirements for the relevant year, the submitted course preferences and any necessary correspondence. A simple, accurate record avoids rushed assumptions.

An ordinary family example: A family can make a four-column sheet: subject, G-level, original grade and whether it is eligible for each considered admission formula.

A practical next step: Use exact subject names and double-check the details before submission. Ask the school if an official document appears inconsistent with a student record.

Important distinction: Avoid sharing a child’s complete personal identifiers publicly while seeking advice. Course eligibility can usually be discussed without disclosing sensitive details.

27. What not to do with historical O- and N-Level guides

Older examination labels and admission calculators may not reflect the SEC’s 2027 certificate or the 2028 admissions exercise. Some historical examples remain educationally useful, but their rules need review.

An ordinary family example: A family finds an old O-Level L1R5 guide online and uses it unchanged for a student applying to JC in 2028. That shortcut risks an inaccurate plan.

A practical next step: Check the publication date and cohort of every external guide. Replace outdated formulas with official 2028 criteria when they are published or confirmed.

Important distinction: A familiar old acronym is not proof that the same admission rule still applies to a later cohort.

28. What to do when the certificate has an unexpected subject entry

A mismatched title or level should be addressed with the school or relevant examining authority through the proper channel. Families should not correct an official result by changing their own spreadsheet.

An ordinary family example: Suppose a learner expected a G2 subject but sees an unfamiliar code in an unofficial document. Confirm the registration and official record before treating it as a final grade.

A practical next step: Compare the official examination registration, certificate and school communication. Ask the appropriate school contact to clarify any discrepancy.

Important distinction: Do not interpret a screenshot or social media message as an official amendment to a national certificate.

29. How to discuss results kindly and usefully

Parents can acknowledge the student’s effort and then move towards concrete choices. Useful questions focus on the subjects the learner enjoys, courses they are eligible for and skills they want to continue developing.

An ordinary family example: A child may feel pleased about one subject and disappointed in another. Both reactions deserve a calm conversation focused on the next available action rather than comparison with friends.

A practical next step: Choose one near-term practical step, such as checking a course requirement or speaking with an ECG counsellor, and schedule the decision when the family can review it together.

Important distinction: A grade is information for a decision. It does not define the entire future, and support should remain grounded in real eligibility rather than empty promises.

30. What the student can do before the examination year

Students can strengthen foundations, understand assessment requirements and develop independent learning habits while they are still in Secondary 1, 2 or 3. Early planning should not become a daily fixation on a distant aggregate.

An ordinary family example: A learner finds that clear explanation is a weakness in both Science and Humanities. Practising how to connect evidence with a conclusion helps both subjects without chasing speculative future points.

A practical next step: Use the current school syllabus and feedback to select one skill to improve each month. Keep time for CCA, friendships, sleep and interests.

Important distinction: An SEC grade mapping table is primarily a later admissions tool. It should not replace meaningful everyday learning.

31. What a good guidance conversation includes

A school Education and Career Guidance conversation can connect actual subject combinations, results, course interests and realistic pathways. This is more helpful than looking at scores in isolation.

An ordinary family example: A learner enjoys design but does not yet know whether a diploma, ITE programme or further academic route is a better fit. An adviser can help compare the choices without reducing them to prestige.

A practical next step: Bring the current subject record, questions about prerequisites and two or three course areas the student genuinely wants to explore.

Important distinction: Course advice should be updated for the student’s application year. Do not assume rules from an earlier cohort remain unchanged.

32. A simple next-step method for every family

Reading an SEC record works best in order: identify the student cohort, the exact examined subjects, each G-level, each original grade, the current admissions formula and only then any authorised conversion.

An ordinary family example: Think of the result slip as a map with several roads. You first locate where the student is, then identify accessible destinations and decide which road supports their interests.

A practical next step: Make a clean copy of the subject record, review the official requirements and ask for clarification where needed. An accurate, hopeful plan is better than a hurried prediction.

Important distinction: The clearest question is not ‘Which Posting Group was my child in?’ but ‘Which subjects and levels did my child actually complete, and what choices do they support?’

Frequently asked SEC questions

Is there a separate PG1, PG2 or PG3 SEC examination certificate?

No. SEAB’s SEC qualification records individual G1, G2 and G3 examined subjects. Posting Groups are primarily an entry arrangement for Secondary 1.

Can one SEC certificate show different G-levels?

Yes. The certificate reflects the different subjects and levels at which the candidate sat the examinations.

Does G3 grade B4 map to G2 grade 2?

Yes, for an authorised G3-to-G2 progression calculation under SEAB’s published mapping table. The original G3 result remains B4.

What does a G2 grade 4 map to at G1?

SEAB’s published table maps G2 grade 4 to G1 grade B when such conversion is prescribed.

Is a mapped grade a second examination pass?

No. It is a derived value for a specified calculation and should not be presented as a separate subject examination result.

Can I directly map G3 to G1?

SEAB directs users to map first from G3 to G2 and then from G2 to G1 where a G1-equivalent grade is needed.

Does a G1 subject count in ELMAB3?

Only subjects and levels allowed by the applicable official formula count. SEAB’s example explicitly leaves a G1 Computing subject outside its illustrated ELMAB3 calculation.

Does SEC replace the O-Level certificate?

From the 2027 graduating cohort, the SEC replaces the separate N(T), N(A) and O-Level certification framework.

Will a student’s certificate describe PG1 or PG3?

The SEC reports the examined subjects and their G-levels, not an overall Posting Group assigned at secondary school entry.

Does every G2 subject count for polytechnic admission?

No. From 2028 the revised ELR2B2 allows an eligible G2 subject in a specified position, and courses still have their own requirements.

Is JC admission determined by PG3?

No. Applicable subject levels, grades, aggregates and current admission rules determine eligibility for the route.

Are G1 and G2 grades on the same scale?

No. G1 uses letter grades; G2 uses numerical grades. SEAB publishes conversion rules for particular progression calculations.

Where do I check exact official grade mapping?

The SEAB SEC overview has the current G3-to-G2 and G2-to-G1 tables and an illustrated ELMAB3 calculation.

When are the first SEC results expected?

SEAB says the 2027 SEC results will be released in January of the following year, 2028.

Can older O-Level admission calculators be trusted for 2028?

Do not use them unchanged. Check MOE’s announced 2028 rules and the course-specific conditions published for that intake.

What if my child has mixed G1, G2 and G3 grades?

That is a legitimate subject-level profile. Record each original result, then check which progression and course options recognise the combination.

Is one common SEC certificate a guarantee of every post-secondary pathway?

No. Courses and institutions have eligibility, prerequisites and selection rules; the certificate is evidence of results, not a universal offer.

What should a parent ask first after receiving results?

Ask which subjects and activities the student wishes to continue with, then compare those interests with confirmed admission eligibility.

Official examination and admissions references

Use these links when a decision depends on a precise syllabus, grade conversion or admission requirement. Published criteria for the intended intake take precedence over older examples.

Connect to the eduKateSG education ecosystem

This guide is the certificate-reading bridge between the foundational Full SBB explainers, year-specific subject study guides and the articles about real post-secondary routes. Choose the link matching the next question rather than trying to read everything at once.

The encouraging next step

A student is more than the grades printed on a certificate. Those grades still deserve careful reading because they open useful conversations about courses, subject readiness, interests and practical possibilities. Accurate information makes those choices calmer and clearer.

Begin with the subjects completed, then use the officially recognised grades and course rules to map what comes next. There is no need to compare students as people. A well-understood result can be the beginning of a thoughtful new chapter.

Ask eduKateSG about matching learning support

Contact eduKate Singapore or message eduKateSG with questions about academic preparation, school syllabuses and small-group tuition. For formal admissions decisions, confirm requirements with MOE, SEAB and the institution.