SBB vs Full SBB: What's Different?

Subject-Based Banding (SBB) and Full Subject-Based Banding (Full SBB) are related, but they are not the same reform. Earlier secondary-school SBB let eligible students from the former Normal (Academic) and Normal (Technical) streams take certain individual subjects at a more demanding level. Full SBB goes further: the former Express, N(A) and N(T) streams have been removed for Secondary 1 cohorts from 2024, students enter through Posting Groups, study subjects at G1/G2/G3 levels, participate in mixed form classes and take a common set of lower-secondary subjects. From 2027, the SEC replaces the separate N- and O-Level certificates.

If a family remembers an older sibling being ‘Normal Academic taking Express Mathematics’, that memory is not wrong. It describes an earlier system. The younger sibling entering Secondary 1 in 2027 will instead hear ‘Posting Group 2, G3 Mathematics and G2 English’. The underlying aspiration — matching individual subjects to individual strengths — is familiar. The system used to organise the school day, identity and final qualification has changed.

Earlier secondary SBB extended selected subjects across otherwise separate academic streams.
Full SBB removes stream labels for the relevant 2024-onward S1 cohorts.
Posting Groups 1, 2 and 3 are for admission and initial subject-level guidance.
G1, G2 and G3 identify individual curriculum levels; they are not three permanent student identities.
Mixed form classes and six common lower-secondary subjects broaden shared school experiences.
From 2027, SEC records actual subjects and G-levels on one qualification.
Primary-school Subject-Based Banding is a separate policy for Standard and Foundation subjects.

1. The fastest way to compare the two systems

Question	Earlier secondary SBB	Full SBB for 2024-onward Secondary 1 cohorts
School entry	Express, N(A) or N(T) course	Posting Group 1, 2 or 3
Student label	Stream/course label continued to describe most subjects	Different subject G-levels can form a personal profile
Higher-level subjects	Selected out-of-stream subjects for eligible students	Subject-level flexibility within a broader structure
Form class	Often organised by course	Mixed form classes in participating mainstream schools
Common curriculum	Did not form the same national Full SBB structure	Six shared lower-secondary subjects
National certificate	Separate N(T), N(A), O-Level certificates	SEC from 2027 at actual G1/G2/G3 subject levels

This table is about the overall policy, not a promise that every Singapore school has identical timetables, programmes or admissions conditions. Integrated Programme and specialised schools can have different structures. Check which actual pathway the child is entering.

2. What was Subject-Based Banding before Full SBB?

The earlier SBB(Sec) model was prototyped in 2014, and expanded in 2018 to secondary schools offering N(A) and/or N(T). A student remained associated with a course, but could take selected subjects at a more demanding level when the subject-specific evidence supported it. At the start of Secondary 1, the relevant core subjects included English Language, Mother Tongue Languages, Mathematics and Science.

Imagine a child in N(A) who handled Mathematics particularly well. Instead of requiring the student to stay at the N(A) level for every subject, SBB could permit Express-level Mathematics. That was a meaningful improvement. But the student still belonged to a system whose form-class, course and final certification structures largely operated under separate streams.

The older system recognised individual subject strengths without fully changing the wider organisation of schooling. Full SBB is the next stage of that development.

3. What did the Full SBB pilot change?

MOE piloted Full SBB in 28 secondary schools in 2020 and progressively expanded it through 2024. The pilot included greater flexibility for some Humanities subjects at a more demanding level from Secondary 2, mixed form classes and a common lower-secondary curriculum. The experience was no longer solely about permitting an extra subject in a higher stream.

That last point matters. A student goes to school to learn with people as well as to master examination content. Mixed form classes change which classmates meet, collaborate and belong together. The shared curriculum gives students who take different academic subjects at different levels some common learning experiences.

4. What exactly changed in 2024?

From the 2024 Secondary 1 cohort, the Express, Normal (Academic) and Normal (Technical) streams were removed in the Full SBB mainstream model. Students continued to enter secondary schools based on PSLE performance, but through Posting Groups 1, 2 and 3. These Posting Groups guide the level of most subjects at entry, not the student’s permanent worth or eventual certificate.

The subject standards were mapped into G1, G2 and G3. G1 broadly corresponds to the former N(T) standard, G2 to the former N(A) standard and G3 to the former Express standard. The word General in ‘G’ describes the subject level. It does not make every subject paper identical.

Families who hear ‘streams were removed’ sometimes conclude that all students now study everything together. That is incorrect. Form classes can be mixed, while academic subject classes are taught at the level suited to the learners studying the particular subject.

5. Posting Group is not the same as subject level

A child with a PSLE Score of 23 enters through Posting Group 2. The initial level for most subjects is G2, but a strong individual Standard PSLE Mathematics result may support an offer to study Mathematics at G3. The child could therefore have English G2, Mathematics G3, Science G2 and Mother Tongue G2, while belonging to one mixed form class.

That student has not ‘changed to PG3’ by accepting G3 Mathematics. Posting Group was the route into the school; G3 Mathematics is one aspect of what the student studies. Under Full SBB, asking which subject level is actually offered is more useful than describing the child simply as a G2 or G3 student.

For the full distinction, see Posting Groups versus G1, G2 and G3 subject levels.

6. The six common lower-secondary subjects

MOE identifies six common curriculum subjects under Full SBB: Art, Character and Citizenship Education (CCE), Design and Technology, Food and Consumer Education, Music and Physical Education. These support shared learning experiences for students whose core academic subjects may be offered at different levels.

Their importance is not merely social. Art requires observing and representing; Design and Technology involves understanding needs and building prototypes; Food and Consumer Education connects practical decisions with evidence; PE involves physical competence and teamwork; Music includes listening, creativity and performance; CCE supports ethical decision-making, relationships and citizenship.

A child may show an unexpected strength in one of these areas. A student struggling with complex mathematical notation may be skilled at designing and testing a model. Another may take longer to write an English composition but be a confident collaborator in an arts project. A fuller school community provides additional places for these capacities to become visible.

7. What does a mixed form class actually look like?

Students enter one form class for school identity, class routines and common experiences. They may move to separate teaching groups for Mathematics, English, Science and other subjects at G1, G2 or G3 as appropriate. The form-class label and the subject-class label answer different questions.

For parents, this means a child’s friend may be in the same form class but a different Mathematics group. It does not mean either student is excluded from school life. A shared CCA, CCE lesson or common curriculum experience can provide plenty of opportunities to cooperate.

For a detailed example of daily arrangements, read How mixed form classes and the common curriculum work under Full SBB.

8. Do all subjects automatically move up together?

No. Full SBB recognises that a child’s Mathematics, language, Science and Humanities strengths can develop at different rates. A child may become ready for G3 Science while continuing with G2 English. Another may need a less demanding level in one subject while enjoying more complex work elsewhere.

Initial offers are informed by individual PSLE subject grades. Later moves are based on school assessments and a holistic judgement of performance, interest, aptitude, readiness and total workload. MOE’s August 2026 parliamentary explanation emphasised that schools make final progression decisions within Ministry guidance rather than apply one national automatic promotion threshold.

9. What about the final examinations?

The 2027 Singapore-Cambridge Secondary Education Certificate replaces the separate GCE N(T), N(A) and O-Level qualifications for the relevant graduating students. SEAB says students sit the subjects at their actual G1, G2 or G3 levels and receive one certificate reflecting those levels.

A common certificate is not a common paper. The curriculum and examination standard of each level remain distinct. A student might take some subjects at G3 and others at G2, but cannot take the same subject at multiple levels in one SEC entry. The result must be interpreted with both its subject name and G-level.

The new examination timetable consolidates written English and Mother Tongue papers in September, with most other written papers in October and November; exact dates should be checked against SEAB’s final timetable for the relevant year.

10. How does Full SBB affect future routes?

The 2028 Post-Secondary Admissions Exercise (PSE) introduces a common main application process for eligible candidates seeking JC, Millennia Institute, polytechnic and ITE programmes. Specific subject-level requirements remain relevant. The revision recognises mixed subject profiles without making every combination eligible for every course.

For example, under the revised polytechnic Year 1 rules, one G2 subject may contribute to the five-subject ELR2B2 computation in a defined position, with other specified subjects at G3. That is a precise admissions rule, not a general declaration that G2 and G3 results are interchangeable.

11. Primary-school Subject-Based Banding is a separate policy

Parents also encounter the term ‘Subject-Based Banding’ in primary school. That system allows pupils to take Standard or Foundation subjects according to learning needs and readiness. It existed before Full SBB in secondary schools. The two systems share the educational idea of matching curriculum to individual subject learning, but they use different labels, stages and national examinations.

At PSLE, Foundation A, B and C grades are mapped to 6, 7 and 8 for the secondary posting score. In secondary school, G1, G2 and G3 refer to actual secondary curricular levels. It is not correct to call Foundation Mathematics ‘G1 Mathematics’ or claim a Foundation grade is itself a G2 examination grade.

12. What has not changed?

Students still need knowledge, careful practice, clear feedback and a manageable learning routine. A student who never understood fractions may still struggle when algebra uses fractions. A child who reads words accurately may still need help drawing inferences from evidence. Changing labels does not repair these underlying educational gaps.

School choice, subject-level offers and later examinations still involve eligibility criteria. Strong performance in one subject may not satisfy the prerequisites for an unrelated course. Full SBB creates flexibility; it does not mean every future path is guaranteed.

13. Why older internet articles can mislead families

An article written for 2022 students may describe Express, N(A), N(T), N-Level and O-Level as the ordinary whole-stream system. Those terms describe cohorts enrolled under earlier arrangements, but they are not the right general labels for a child entering Secondary 1 in 2027.

Check the cohort: which year did the child enter Secondary 1, and which national examination will they sit? A 2023 Secondary 1 N(A) learner could still follow transitional arrangements through Secondary 5 in 2027, whereas a 2024 Secondary 1 Full SBB learner reaches the first SEC cohort at Secondary 4 in 2027. Both facts can be true without contradiction.

14. A parent checklist when a school letter arrives

Identify the student’s secondary-school entry year and whether Full SBB applies.
Read the actual Posting Group for S1 admission.
Write down every subject and its offered G1/G2/G3 level.
Separate form class from subject teaching groups.
Check school booklists against the offered subject levels.
Ask about the school’s review points for subject-level changes.
Plan current learning rather than infer identity from one level.
Use the correct SEC syllabus and official post-secondary requirements for the relevant cohort.

15. Common questions

Is Full SBB just a new name for streaming?

No. It changes the organisation of the school experience, uses Posting Groups for entry rather than permanent streams, broadens subject-level flexibility, includes mixed form classes and a common curriculum, and leads to the SEC.

Did secondary Subject-Based Banding begin only in 2024?

No. Earlier secondary SBB was prototyped in 2014 and expanded in 2018. The broader Full SBB model was piloted from 2020 and fully implemented for the relevant S1 cohorts from 2024.

Does Full SBB mean all students take G3?

No. Subjects can be taken at G1, G2 or G3 according to eligibility, readiness and school decisions.

Are G1, G2 and G3 separate form classes?

Not necessarily. Mixed form classes and subject-specific teaching groups are different arrangements.

Are the SEC exams identical for all levels?

No. Students sit the respective G-level paper and the certificate states which level they took.

Does this apply automatically to every IP or specialised school?

No. Specialised and Integrated Programme pathways may have distinct curriculum structures. Check the actual school’s official programme.

What is the first practical step for a parent?

Identify the child’s actual school entry route, subject levels and learning needs. Those three facts explain more than an old stream label.

16. Official sources and continuing eduKateSG routes

Information checked: 6 November 2026. This is independent educational guidance. School admission, offered subject levels and examination regulations should be confirmed against the current MOE, SEAB and receiving-school information.

How Full Subject Based Banding Works | FullSBB Subject-Based Banding vs Full SBB: What Changed in 2024?