A parent hears three new labels after PSLE:
G1. G2. G3.
Then another three appear:
Posting Group 1. Posting Group 2. Posting Group 3.
It is easy to assume these are simply new names for the old Normal (Technical), Normal (Academic) and Express streams.
That is too simple.
Under Full Subject-Based Banding, the important unit is increasingly the subject level rather than one stream label attached to the whole student.
A student can take different subjects at different levels. The levels can change at appropriate points when the student’s readiness, strengths and learning needs change. Students learn in mixed form classes rather than being organised by the old Express, N(A) and N(T) course labels.
This guide sits under Understanding G1, G2 and G3 in Singapore’s Secondary Schools, which remains the broad existing owner. It also connects to eduKateSG’s Full SBB Parent Master Guide and the complete PSLE → PG1/PG2/PG3 → G1/G2/G3 → SEC specification.
The 60-second answer for parents
- G means General. G1, G2 and G3 are subject levels under Full Subject-Based Banding.
- G1, G2 and G3 are not three permanent student identities. A student can take different subjects at different levels.
- G1, G2 and G3 broadly map from the former N(T), N(A) and Express standards respectively.
- Posting Group 1, 2 or 3 is mainly used to facilitate entry into Secondary 1. It is not the same thing as the level of every subject the student must take forever.
- Full SBB has been fully implemented for Secondary 1 cohorts since 2024. The old stream labels are being phased out.
- Students are in mixed form classes. Their subject combinations can still differ.
- Subject levels can be adjusted at appropriate junctures. Movement should follow readiness and evidence, not prestige.
- From 2027, students in the relevant graduating cohort sit the Singapore-Cambridge Secondary Education Certificate examination. The SEC reflects the subjects and subject levels offered.
The most useful parent question is therefore not:
Is my child a G1, G2 or G3 student?
It is:
At what level should this child take this subject now, and what evidence would justify the next move?
What changed under Full Subject-Based Banding?
Singapore’s earlier secondary-school structure grouped most students into Express, Normal (Academic) or Normal (Technical) courses.
Those course labels bundled many subjects together.
Full Subject-Based Banding changes the organising logic.
From the 2024 Secondary 1 cohort onwards, MOE fully implemented Full SBB in secondary schools. Students can offer subjects at different levels according to their strengths, interests and learning needs. The three levels are G1, G2 and G3, with G standing for General.
The broad mapping is:
| Current subject level | Broadly mapped from former standard | Parent interpretation |
|---|---|---|
| G1 | Normal (Technical) | A less demanding subject level for the current learning state |
| G2 | Normal (Academic) | A middle subject level |
| G3 | Express | A more demanding subject level |
The words less demanding and more demanding are important.
They describe the subject level.
They should not be turned into a judgement about the whole child.
The first big distinction: Posting Group is not Subject Level
This is the source of much parent confusion.
Posting Groups help facilitate admission into Secondary 1.
G1, G2 and G3 describe the level at which a subject is offered.
They interact, especially at the point of entry, but they are not the same object.
| Question | Posting Group | G1/G2/G3 Subject Level |
|---|---|---|
| Main job | Facilitates Secondary 1 posting | Sets the demand level of a subject |
| Applies to | School-entry process | Individual subjects |
| Can subjects differ? | Not the purpose of the PG label | Yes, a student may take a mix of levels |
| Should parents treat it as identity? | No | No |
| Can learning level change? | Posting itself is an entry mechanism | Subject levels can be adjusted at appropriate junctures |
For the dedicated admission-side explanation, see Posting Groups (PG1/PG2/PG3) Explained.
A student can have a mixed subject profile
This is one of the most important conceptual changes for families.
Imagine Alicia is especially strong in Mathematics but needs more time in another subject.
The useful educational question is no longer forced into:
Which single stream describes Alicia?
The system can instead ask:
What level is appropriate for Mathematics? What level is appropriate for this other subject?
That creates a more granular learner profile.
It also creates a new parent responsibility: avoid collapsing that profile back into one prestige label.
A child taking one G2 subject and several G3 subjects is not “less G3”. A child taking several G2 subjects and one G3 subject is not “really a G2 child”.
The subject combination is information about current readiness.
It is not a personality test.
The second big distinction: level is a learning state, not a ceiling
Parents naturally worry that beginning a subject at one level permanently closes another route.
Full SBB is designed to create more flexibility than the old bundled streams.
Students may adjust subject levels at appropriate junctures based on their progress, strengths and readiness.
That does not mean movement is automatic.
It should be evidence-led.
A subject level is useful when it creates enough challenge for growth without making the student spend the entire lesson in rescue mode.
The productive question is:
Can the student operate independently at this level, and is there evidence that the next level would create productive rather than destructive challenge?
Why pushing upward too early can backfire
A more demanding subject level can look attractive because it appears to preserve more future options.
But a level that is too demanding for the current foundation can produce several hidden costs:
- constant tutor rescue;
- memorisation without understanding;
- weak transfer;
- rising correction debt;
- loss of confidence;
- less time available for other subjects;
- strong-looking exposure but weak independent ownership.
This is the same load-transfer idea used elsewhere in eduKateSG.
Difficulty should rise when the form can carry it.
Higher demand is useful only if it produces adaptation rather than permanent rescue.
Why holding a ready student down can also backfire
The inverse problem matters too.
If Tricia is consistently secure, transferring well, completing work independently and showing readiness for greater abstraction, keeping her permanently at an easier level can reduce challenge.
Readiness should be tested, not assumed.
The useful signals include:
- stable performance across different question forms;
- low dependence on prompting;
- strong transfer to unfamiliar tasks;
- clear conceptual explanations;
- manageable error rates under increased load;
- enough learning capacity left for the rest of the timetable.
The system should be flexible in both directions.
Three students in one form class can have three different subject profiles
Under Full SBB, mixed form classes are part of the secondary-school experience.
Imagine Alicia, Tricia and Kai Kai are classmates.
Alicia takes Mathematics at a more demanding subject level because her number and algebra foundations are strong, while another academic subject remains at a level that better matches her current pace.
Tricia has a relatively even profile across subjects and is working on strengthening transfer before attempting a higher level in one subject.
Kai Kai entered Secondary 1 with a different starting profile but later demonstrates readiness to move upward in a subject.
They share a school and form class.
Their academic routes are not identical.
That is not a malfunction.
It is part of the intended architecture.
What actually changes between G1, G2 and G3?
The exact differences depend on the subject.
It is therefore misleading to say that G1, G2 and G3 are simply the same worksheet with different numbers.
Across subjects, a more demanding level can involve some combination of:
- greater content depth;
- more abstraction;
- denser language;
- longer reasoning chains;
- more independent method selection;
- more unfamiliar transfer;
- different assessment demands.
For Mathematics specifically, eduKateSG has already separated this issue into What Is G1, G2 and G3 Mathematics in Secondary School? and G1 G2 G3 Mathematics | What Changes in Secondary School.
The important parent principle is broader:
subject level changes the learning load, not the worth of the learner.
The new parent dashboard: stop asking only for the grade
A grade is important.
But a parent deciding whether the current subject level fits needs more information.
| Signal | What it may tell you |
|---|---|
| High mark, heavy prompting | Performance may still be scaffolded |
| Moderate mark, strong independent reasoning | Capability may be better than the score suggests |
| Strong routine work, weak unfamiliar work | Transfer is the bottleneck |
| Good understanding, very slow execution | Fluency or retrieval may limit usable performance |
| Frequent collapse across several topics | Current level or prerequisite floor may need review |
| Stable accuracy and successful transfer | Readiness for greater challenge may be worth testing |
This is the same diagnostic principle used throughout eduKateSG:
read the state before choosing the intervention.
A level change should solve a learning problem
Moving a subject upward should have a reason.
Moving it downward should also have a reason.
Examples of useful reasons might include:
- the current level is consistently too easy and transfer remains strong;
- the student has repaired an earlier weak link and now demonstrates readiness;
- the current level consumes disproportionate time because prerequisites are unstable;
- a temporary adjustment would protect learning continuity while repair happens;
- subject interest and future pathway considerations justify testing greater demand.
What is less useful is moving levels primarily because one label feels more prestigious.
Prestige is not a learning mechanism.
The independence test for subject-level readiness
A student may appear ready for a more demanding level while receiving substantial support.
That makes the independence test important.
If the teacher, tutor or parent becomes quieter, does the student’s performance remain coherent?
Look for:
- independent reading of the task;
- method or strategy selection without being told;
- ability to recover from an error;
- successful transfer when the question changes;
- reasonable pacing;
- capacity to explain the underlying idea;
- stable performance across several weeks, not one unusually good test.
This is more informative than asking whether the student can complete one advanced worksheet with help.
Full SBB changes the meaning of “catching up”
Under a more flexible subject-level system, “catching up” does not have to mean racing through every missed topic as quickly as possible.
Sometimes the better sequence is:
stabilise → repair → transfer → test readiness → increase load.
This is particularly important during Secondary 1 and Secondary 2, when the student is still adapting to subject-specific demands and future options remain open.
A rushed upward move can produce years of hidden repair work.
A well-timed move can turn earlier repair into sustainable progress.
What happens to the old Express, N(A) and N(T) labels?
For the Secondary 1 cohorts under Full SBB, the old course labels are being phased out as the organising structure.
The new subject levels are broadly mapped from those earlier standards:
- G1 from the former N(T) standard;
- G2 from the former N(A) standard;
- G3 from the former Express standard.
Parents should use that mapping to understand academic demand, not to recreate the old streams socially inside the new system.
Calling a child “Express” because several subjects are at G3, or “N(A)” because a subject is at G2, misses the purpose of Full SBB.
The new architecture is more granular.
What is the Singapore-Cambridge SEC?
From 2027, the Singapore-Cambridge Secondary Education Certificate becomes the common national certification for the relevant graduating secondary-school cohort under Full SBB.
The SEC replaces the separate GCE N(T)-Level, N(A)-Level and O-Level examination certificates for these students.
The important architectural idea is that the certification reflects the subjects and subject levels the student actually offers.
That fits the Full SBB logic:
one student → potentially different subject levels → one certificate reflecting the actual profile.
The first SEC cohort will use this qualification for post-secondary progression in the following admissions cycle. For the wider route, see How Schools Work | The National Examinations and eduKateSG’s SEC Tuition pathways.
Does G3 automatically mean Junior College?
No single subject label by itself determines the whole post-secondary destination.
Post-secondary progression depends on the student’s eventual combination of subjects and subject levels, results, admission criteria and the requirements of the pathway being considered.
The useful parent move is to plan backward from possible future routes without turning that planning into premature identity.
Ask:
- Which future options matter to this student?
- Which subjects are prerequisites or strategically important?
- What level is needed for those routes?
- What level can the student currently sustain independently?
- What repair or stretch would move the student closer?
This is route planning rather than label chasing.
Subject choice is really option management
As students progress through secondary school, subject choices and subject levels begin affecting later options.
That does not mean every door should be kept open at any cost.
Keeping every possible option open can itself create excessive workload.
The better problem is optimisation:
preserve valuable future options while keeping the current learning load sustainable.
This is why the newer eduKateSG pages How School Pathways Work | When One Decision Changes the Next Five Years and How Subject Choice Works | The Door You Keep Open connect naturally to Full SBB.
The scheduling problem: one difficult subject affects the whole week
Subject-level decisions are not isolated.
A more demanding subject can require:
- more homework time;
- more correction time;
- additional tuition or consultation;
- greater examination preparation;
- more cognitive recovery after school.
That load competes with every other subject, CCA, sleep and family time.
This creates an important parent question:
Can the student carry this subject level without destabilising the whole learning system?
Sometimes the academically “highest” configuration is not the highest-performing total configuration.
The system has to fit the whole child’s week.
How tuition should respond to G1, G2 and G3
Tuition should not simply print three versions of the same worksheet and call that differentiation.
The tutor needs to understand the learning job.
For a student at G1, the priority may be access, stable foundations, complete representations and confidence through successful independent control.
For a student at G2, the priority may be consolidation, transfer and building readiness for greater demand where appropriate.
For a student at G3, the priority may include greater abstraction, transfer, reasoning density and reliability under heavier assessment load.
Those are tendencies, not stereotypes.
A G3 student can still need foundation repair.
A G1 student can still need stretch.
See Secondary Mathematics G1, G2 and G3 | Teaching the Student at the Right Level for the Mathematics example.
The three parent mistakes to avoid
Mistake 1: turning a subject level into identity
“My child is G2.”
This compresses too much information.
Which subject? At what point in time? With what current performance? With what readiness for change?
Mistake 2: treating upward movement as the only success
Sometimes the best move is upward.
Sometimes the best move is stabilising the current level until the student can own it.
Sometimes a temporary reduction in load protects the rest of the learning system.
Mistake 3: planning only from today’s mark
Marks matter, but pathway decisions should include trend, independence, transfer, workload and future subject requirements.
One test is a signal.
A pathway decision is a system decision.
A parent decision loop for G1/G2/G3 subject levels
A useful loop is:
Observe → Diagnose → Stabilise → Test → Adjust → Review.
- Observe: Look at current performance, workload and independence.
- Diagnose: Identify whether difficulty comes from concept, language, retrieval, transfer or exam control.
- Stabilise: Repair the weakest prerequisite or operating habit.
- Test: Increase or reduce challenge in a controlled way.
- Adjust: Consider the most suitable subject level at the school’s appropriate decision point.
- Review: Check whether the new state improves learning without destabilising the wider timetable.
The loop prevents one label from becoming permanent merely because it was correct six months ago.
Questions parents can ask the school
- What evidence does the school use when considering a change of subject level?
- At what points can the level be reviewed?
- What differences in curriculum and assessment should we expect at the next level?
- Which current weak links should be repaired before moving?
- How would a level change affect the student’s timetable and subject combination?
- What post-secondary options should we keep in view for this subject?
- What would successful adjustment look like after the change?
These questions move the conversation from labels to evidence.
Where this article connects inside eduKateSG
- Understanding G1, G2 and G3 in Singapore’s Secondary Schools — the broad existing owner.
- Full SBB Parent Master Guide — G1/G2/G3 and PG1/PG2/PG3 in one parent route.
- Posting Groups Explained — the admission-side mechanism.
- From PSLE to SEC — the complete pathway specification.
- What Is G1, G2 and G3 Mathematics in Secondary School? — subject-specific Mathematics ownership.
- Secondary Mathematics G1, G2 and G3 | Teaching the Student at the Right Level — the tuition/differentiation route.
- How School Pathways Work — long-horizon pathway decisions.
- How Subject Choice Works — managing future options.
- Parents & Pathways Hub — the wider parent decision system.
Frequently asked questions
What does G1, G2 and G3 mean in Singapore secondary schools?
They are subject levels under Full Subject-Based Banding. G stands for General. G1, G2 and G3 broadly map from the former N(T), N(A) and Express standards respectively, but students can take different subjects at different levels.
Is Posting Group 3 the same as taking every subject at G3?
No. Posting Groups facilitate Secondary 1 admission. Subject levels describe the demand level of individual subjects. A student may have a mixed subject profile.
Can a student move from G2 to G3?
Subject levels can be adjusted at appropriate junctures when the student demonstrates suitable readiness and progress, subject to the school’s criteria and arrangements. Parents should ask the school how that evidence is evaluated for the specific subject.
Can a student take one subject at G3 and another at G2?
Yes. The flexibility to offer different subjects at different levels is a central feature of Full Subject-Based Banding.
What happens in 2027?
The relevant graduating cohort begins sitting the Singapore-Cambridge Secondary Education Certificate examination. The SEC reflects the subjects and subject levels offered and replaces the separate N(T)-, N(A)- and O-Level certificates for these students.
Does taking G1 or G2 mean a child cannot progress?
No single subject level by itself defines the student’s whole future pathway. Progression depends on the eventual subject combination, levels, results and admission requirements. The useful focus is the student’s current readiness and the future options that matter.
The idea to keep
G1, G2 and G3 are most useful when parents treat them as coordinates, not identities.
They tell us something about the current level of a subject.
They do not tell us everything about the child.
Observe the learner. Diagnose the current state. Stabilise what is weak. Stretch what is ready. Test independence. Manage the whole weekly load. Keep valuable future doors open without forcing every door open at once.
Then review again.
That is the real advantage of a more flexible subject-level system: the route can respond when the learner changes.
For parent pathway questions, continue through the Parents & Pathways Hub. For tuition enquiries, use Contact eduKateSG.