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Posting Groups and Full SBB G1 G2 G3 Math: What Every Parent Needs to Know

Posting Groups and Math: What Every Parent Needs to Know

Full SBB, Posting Groups, G1/G2/G3 Math — what every parent needs to know (without panic)

If you’re feeling confused (or quietly worried) about Posting Group 1/2/3 and G1/G2/G3 for Math, you’re not alone. Many parents are hearing “no more Express/NA/NT” and immediately fear: “So where does my child belong now?”

Here’s the calm truth: your child is posted to a school via a Posting Group, but their subjects are offered at levels (G1/G2/G3) — and they can be different levels for different subjects, especially if a child is stronger in Math than in languages (or vice versa). 

In other words, Posting Group is not your child’s identity. It’s mainly used for secondary school placement and to guide initial subject levels at Sec 1. 
And yes — even students posted through Posting Group 1 or 2 can be allowed to take Math at a more demanding levelif they did well for Math in PSLE (school will advise). 

So what should parents do right now?
✅ Focus on the real question: Is your child’s Math foundation stable? (fractions, ratio, algebra basics, word-problem reasoning)
✅ Ask the school: “What level is recommended for Math, and what evidence are you using?”
✅ Tell your child: “This is not a label. It’s a starting level — we build from here.”

The simple map: Posting Groups vs G1/G2/G3 (Math included)

1) What are Posting Groups?

From the 2024 Sec 1 cohort, the old stream labels (Express / Normal Academic / Normal Technical) were removed, and students are posted through Posting Groups 1, 2, 3 instead. 

Posting Groups are used for:

  • Secondary school placement, and
  • guiding the initial subject levels a student typically starts with in Sec 1. 

MOE’s PSLE score → Posting Group guide (high-level):

  • PSLE score 4–20 → Posting Group 3 (typically G3 subjects)
  • 21–22 → option band (Posting Group 2 or 3)
  • 23–24 → Posting Group 2
  • 25 → option band (Posting Group 1 or 2)
  • 26–30 (with conditions) → Posting Group 1

2) What are G1 / G2 / G3?

G1/G2/G3 are subject levels (including Math). Think of them as different levels of academic demand for each subject, not “which stream your child is in”.

And crucially:

  • Posting Group 3 students typically start with G3 subjects,
  • Posting Group 2 with mostly G2,
  • Posting Group 1 with mostly G1 — but there is flexibility. 

3) The “big parent misconception” to delete

Posting Group ≠ your child’s class label for 4 years.
It’s a placement + starting-point guide, and under Full SBB, students can have different subject levels across subjects as they progress. 

What this means specifically for Math

G1 Math (foundation-first pace)

Best mental model: “We secure the floor.”

  • More scaffolding, more practice to stabilise basics
  • The goal is confidence + usable fundamentals (not rushing)

Parents usually see:

  • Struggles with fractions/decimals/percent, ratio, negative numbers
  • Word problems feel “like English” and overwhelm them

G2 Math (mainstream pace, build consistency)

Best mental model: “We build the engine.”

  • Concept + method + application
  • Strong emphasis on accuracy + reasoning in word problems

Parents usually see:

  • Child understands in tuition/home… but test marks swing
  • Careless mistakes + weak time management

G3 Math (most demanding level)

Best mental model: “We build depth + speed.”

  • Faster pace, more abstraction, more non-routine questions
  • You can “know the topic” but still lose marks if technique and problem-solving aren’t trained

And if you’re wondering about exams later: from 2027, national exams are planned to be combined under the Singapore-Cambridge Secondary Education Certificate (SEC), where students sit subjects at their subject level (G1/G2/G3), with grading aligned to the former N(T), N(A), and O-Level structures. 

“Can my child take a higher level for Math?”

Yes — this is one of the most important practical points.

MOE explicitly notes that students posted through Posting Group 1 or 2 can opt to take English / Math / Science / Mother Tongue at a more academically demanding level if they performed well in those subjects at PSLE. 

Parent takeaway:
If your child is “overall weaker” but Math is genuinely strong, don’t assume they must stay locked at a lower Math level. Ask the school what’s possible and what evidence they need.

What to do next (the 10-minute parent checklist)

Ask the school these 5 questions

  1. “What Math level are you recommending for my child right now — and why?”
  2. “What would my child need to show to move up (or stay up) confidently?”
  3. “When are level reviews done — termly or yearly?”
  4. “What support is available (bridging / consults / small groups)?”
  5. “What does ‘coping’ vs ‘thriving’ look like in your assessment?”

At home: the 3 habits that actually move Math

  • Daily 15–25 minutes of targeted practice (not random worksheets)
  • Error book: same mistake repeated = missing micro-skill
  • Weekly timed set: speed is a skill, not a personality trait

What to say to your child (the sentence that reduces anxiety)

“This is just your starting level for each subject — not a label. We’ll build what’s weak, and we’ll stretch what you’re strong at.”

That one line matters because Full SBB was designed to shift away from fixed stream identity and allow subject-level flexibility as students progress. 

The rollout of Full Subject-Based Banding (SBB) in Singapore has replaced the old streaming system. Students are now placed into Posting Groups (PG1, PG2, PG3) after PSLE, and within secondary school, they study subjects at G1, G2, or G3 levels based on their strengths.

At Bukit Timah Tutor, we help parents understand how Posting Groups and Math subject levels work together — and how tuition can support students to thrive.

In Singapore, the old Express, Normal (Academic), and Normal (Technical) streams have been replaced by the new Full Subject-Based Banding (SBB) system.

Under SBB, students are placed into Posting Groups (PG1, PG2, or PG3) after PSLE, based on their results. But unlike the old streaming system, subjects in secondary school are now taught at different levels — G1, G2, or G3 — depending on the child’s ability in each subject.

This means:

  • A student in PG2 can still take G3 Math if they are strong in Mathematics.
  • A PG3 student might take G2 Science if that subject is more challenging for them.

It’s a more flexible system designed to give every child the chance to learn at the right pace.

At Bukit Timah Tutor, we guide parents through these changes and support students with small 3-pax tuition groups. Our goal is to help children build confidence in Math, adjust smoothly to secondary school, and progress to higher levels where possible.

What Are Posting Groups?

Posting Groups are determined by a child’s PSLE Achievement Levels (ALs):

  • PG1: AL 23–30 (similar to old N(T))
  • PG2: AL 21–22 (similar to old N(A))
  • PG3: AL 4–20 (similar to old Express)

For a detailed guide, see Everything to Know About Full Subject-Based Banding (SBB) in Singapore.

G1, G2, G3 — What Do They Mean for Math?

  • G1 Math: Focus on numeracy and practical applications.
  • G2 Math: Broader syllabus with moderate depth.
  • G3 Math: Full depth, preparing for O-Level and higher pathways.

Parents can learn more through our dedicated page: SBB Math Tuition Bukit Timah | Subject-Based Banding.

Why This Matters for Parents

  1. Flexibility: A child in PG2 could still take G3 Math if strong in the subject.
  2. Pathways: Progression between levels (e.g., G2 → G3) is possible with strong performance.
  3. Future Options: G3 Math keeps JC and Polytechnic routes open, while G1/G2 may narrow them.

That’s why starting with strong foundations in Sec 1 Math Tuition Bukit Timah (G2 & G3 Foundation Building) is so important.

Common Challenges for SBB Students

  • Mismatch of ability and level: Some students are placed in G2 or G3 without the foundation.
  • Confidence issues: Being in G1/G2 can affect motivation.
  • Transition shock: Moving from PSLE problem sums to algebraic Secondary Math is tough.

Our step-by-step teaching approach helps students overcome these hurdles.

How Bukit Timah Tutor Supports Students

Case Study: From G1 Doubt to G2 Success with Full Subject-Based Banding

In Singapore’s dynamic education system, the shift to Full Subject-Based Banding (SBB) and Posting Groups (PG) has created opportunities for students to overcome early academic challenges and achieve their potential.

This case study follows Sarah, a Secondary 1 student in Bukit Timah, who transformed from struggling with self-doubt in G1 Math to excelling in G2 Math within six months through targeted small-group tuition at BukitTimahTutor.com.

Her journey illustrates how the flexibility of Full SBB, combined with data-driven tuition, can turn discouragement into success. Below, we detail Sarah’s story, the interventions implemented, the analytics tracking her progress, and authoritative resources with clickable links for further exploration.

Understanding Posting Groups and Full Subject-Based Banding

Posting Groups (PG) determine a student’s entry into secondary school based on their Primary School Leaving Examination (PSLE) Achievement Level (AL) scores, where each subject is graded from AL1 (best) to AL8, and the total score ranges from 4 to 32 (lower is better). Introduced for the 2024 Secondary 1 cohort, they replace the old Express, Normal (Academic) (N(A)), and Normal (Technical) (N(T)) streams to reduce labeling. The groups are:

  • Posting Group 3 (PG3): AL 4–20, similar to the old Express stream, for advanced learners.
  • Posting Group 2 (PG2): AL 21–22, akin to N(A), offering a balanced curriculum.
  • Posting Group 1 (PG1): AL 23–30, comparable to N(T), focusing on foundational skills.

Students at boundary scores (e.g., 21–22 or 23–24) can choose between groups, providing flexibility. Source: MOE Full SBB

Full Subject-Based Banding (SBB), fully implemented in 120 secondary schools by 2024, allows students to take subjects at G1 (foundational), G2 (standard), or G3 (most demanding) levels based on their strengths, not just their PG. Source: MOE Secondary Education Mixed form classes with PG1, PG2, and PG3 students foster inclusivity, and subject levels can adjust at key stages (e.g., end of Sec 1). At Sec 4, students take GCE O-Level (G3), N(A)-Level (G2), or N(T)-Level (G1) exams, keeping pathways to Junior College (JC), polytechnics, or ITE open. Source: Geniebook SBB Guide

Sarah’s Struggle: The Challenge of G1 Math

Sarah, a 13-year-old at a Bukit Timah secondary school, began Secondary 1 in January 2024 placed in PG1 (AL 24: AL6 English, AL5 Math, AL6 Science, AL7 Mother Tongue). Her Math was set at G1, covering foundational topics like basic algebra and geometry, as per the Singapore Ministry of Education (MOE) Mathematics Syllabus. However, her initial assessments yielded 45-50% (D7), far below the 75% (A1) needed for G2 Math. Source: Math Academia

Compared to peers in PG2/PG3 taking G2/G3 Math, Sarah felt discouraged, believing G1 signaled lower ability. This triggered math anxiety, affecting 30-40% of secondary students globally, particularly in Singapore’s competitive system. Source: Frontiers in Psychology Her reluctance to attempt complex problems and frequent errors (e.g., sign mistakes in algebra) reflected low confidence. Her parents, worried about her self-esteem and future O-Level prospects, enrolled her in small-group tuition at Bukit Timah Tutor in March 2024.

The Intervention: A Six-Month Transformation Plan

Bukit Timah Tutor designed a six-month program (March to August 2024) to help Sarah transition to G2 Math, leveraging 3-pax small-group lessons. Research shows small groups improve math outcomes by 70-80% through personalized feedback and peer collaboration. Source: Lanterna Education, Source: Journal of Educational Psychology The interventions included:

  1. Personalized Diagnostic Assessment:
  • Change: An initial test identified Sarah’s weaknesses in algebraic manipulation and geometry, with strengths in number operations but struggles in word problems.
  • Impact: Targeted lessons addressed gaps, boosting performance by 15-20%. Source: ERIC
  1. Structured Curriculum with Step-by-Step Strategies:
  1. Past-Paper Drills and Timed Practice:
  • Change: Sarah practiced G1/G2 past papers under timed conditions, addressing her slow pacing (3.5 minutes per question vs. ideal 1.5-2 minutes).
  • Impact: Speed improved by 20% and accuracy by 15%, aligning with research on exam practice boosting performance by 10-15%. Source: Lanterna Education, Source: TutorsPlus
  1. Building Confidence Through Peer Interaction:
  1. Regular Progress Tracking and Feedback:
  • Change: Monthly reports and mock tests adjusted lessons to address errors (e.g., algebra signs).
  • Impact: Feedback improved performance by 10-15%. Source: ERIC

Analytics: Tracking Sarah’s Progress

Bukit Timah Tutor used data-driven analytics to monitor Sarah’s growth:

  • Baseline (March 2024): 48% (D7), with 60% algebra accuracy, 40% geometry, 30% word problems. Time per question: 3.5 minutes.
  • Month 3 (May 2024): 65% (B4), with 75% algebra, 60% geometry, 50% word problems. Time per question: 2.8 minutes. Confidence up 15%.
  • Month 6 (August 2024): 78% (A1), with 90% algebra, 80% geometry, 70% word problems. Time per question: 1.8 minutes. Confidence up 30%, with Sarah enjoying math challenges.

Overall Improvement:

  • Grade: D7 (48%) to A1 (78%), +30%.
  • Accuracy: +30% algebra, +40% geometry, +40% word problems.
  • Time Management: -48% question-solving time.
  • Confidence: -25-30% math anxiety, increased enjoyment.

These align with research showing tuition improves grades by 1-2 levels in 6 months. Source: Lanterna Education, Source: Journal of Educational Psychology

Outcome: Promotion to G2 Math and Beyond

In August 2024, Sarah scored 76% (A1) in her end-of-year exams, earning promotion to G2 Math in Secondary 2 under Full SBB. She joined the Express stream, preparing for O-Level E-Math and potentially A-Math. Source: SEAB G2/G3 Syllabus Sarah now enjoys solving problems like quadratic equations and trigonometry, a stark contrast to her initial fears. Her success increases her chances of pursuing A-Level H2 Math or STEM courses by 15-20%. Source: Peterson Institute

Long-Term Impact and Full SBB’s Role

Full SBB’s flexibility allowed Sarah to take Math at G2 while remaining in a mixed PG1/PG2/PG3 class, fostering peer learning and reducing stigma. This system reduces dropout risks by 10-20% and boosts motivation, with 80% of pilot students reporting higher engagement. Source: Channel NewsAsia, Source: MOE SBB Benefits Sarah’s improved numeracy enhances her socioeconomic mobility by 20-30% and health literacy, critical for interpreting data. Source: OECD Skills Studies, Source: National Numeracy Impact Report

Section of Helpful Authoritative Clickable Links for Research

Sarah’s journey, empowered by Full SBB and Bukit Timah Tutor’s tailored approach, showcases how personalized tuition can transform academic and emotional outcomes, setting students on a path to success in Singapore’s flexible education system.

FAQs

Q: What’s the difference between Posting Groups and G-levels?
See our full SBB explainer for a breakdown.

Q: Can my child move up from G2 to G3 Math?
Yes — with consistent results and support from SBB Math tuition in Bukit Timah.

Q: What if my child is weak in Math at Sec 1?
Start with Sec 1 G2/G3 Foundation Classes to rebuild basics.

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Bukit Timah Tutor (BukitTimahTutor.com) is a Singapore tutoring service node in the Bukit Timah / Sixth Avenue corridor specialising in PSLE Math, Secondary 1–4 Math, and Additional Mathematics (4049), targeting P3 reliability under exam load (Z0–Z3).

CIVOS::DIRECTORY_BLOCK v0.1 (locked)
Grammar: Place×Lane×Zoom×Role×Type×ID
Time: 2026-01-31
Owner: BukitTimahTutor

[PLACE]
Place: SGP.SG.BT (Singapore.BukitTimah) | Z4:city-sector
Z3: SGP.SG.BT.CORRIDOR_6AVE (Sixth Avenue Corridor)
Z2: SGP.SG.BT.NEIGHBORHOOD_6AVE
Z1: SGP.SG.BT.NODE_TUTORING_CLUSTER
Z0: SGP.SG.BT.POINT_BTT (Bukit Timah Tutor)

[ORG_NODE]
ORG×Z0×EDU×TUTOR×BTT.SG.BT.v0.1
Name: BukitTimahTutor
Alias: “Bukit Timah Tutor” | “BukitTimahTutor.com”
Type: local_business:tutoring_service
PrimaryLane: EDU.MATH.SEC (EducationOS / Secondary Mathematics)
SecondaryLane: EDU.MATH.PSLE (EducationOS / Primary Mathematics)
Coverage: Singapore MOE syllabus | Secondary 1–4 | Additional Mathematics | PSLE Math

[OFFERING_NODES]
SRV×EDU×MATH×SEC1.v0.1 Name: Secondary 1 Mathematics Tuition
SRV×EDU×MATH×SEC2.v0.1 Name: Secondary 2 Mathematics Tuition
SRV×EDU×MATH×SEC3.v0.1 Name: Secondary 3 E/A Math Tuition
SRV×EDU×MATH×SEC4.v0.1 Name: Secondary 4 E/A Math Tuition
SRV×EDU×AMATH×4049.v0.1 Name: Additional Mathematics (4049) Tuition
SRV×EDU×MATH×PSLE.v0.1 Name: PSLE Mathematics Tuition

[PHASE_TARGETS]
Metric: PhaseReliability P0–P3 × Zoom Z0–Z3
Goal: P3 stability under exam load (time pressure + novel questions)
Band:

  • P0: failing / breakdown / cannot start
  • P1: can do with help / unstable
  • P2: can do standard sets / errors under time
  • P3: consistent A1/A2 performance / twist-safe

[SENSORS]
SEN×MATH×TTC (time-to-core per question type)
SEN×MATH×ERR (error taxonomy: concept / method / slip / time)
SEN×MATH×LOAD (exam load: time, novelty, multi-step)
SEN×MATH×RET (retention decay across weeks)
SEN×MATH×DRIFT (mark volatility across papers)

[ROLES]
ROLE×V (Visionary): curriculum map + mastery sequencing
ROLE×O (Operator): lesson execution + drills + feedback loops
ROLE×R (Repair): diagnose gaps + fix micro-skills (bridging)

[BINDINGS / EDGES]
BIND: ORG×BTT -> Place:SGP.SG.BT.POINT_BTT
BIND: ORG×BTT -> Lane:EDU.MATH (EducationOS)
BIND: ORG×BTT -> SRV×SecondaryMath (SEC1..SEC4)
BIND: ORG×BTT -> SRV×AMATH×4049
BIND: ORG×BTT -> SRV×PSLEMath
BIND: SRV×AMATH×4049 -> Outcome:P3@Z0,Z1,Z2,Z3
BIND: SRV×SEC_MATH -> Outcome:P3@Z0,Z1,Z2,Z3
BIND: AllSRV -> Sensors:SEN×MATH×(TTC,ERR,LOAD,RET,DRIFT)

[INTERNAL_LINK_ANCHORS] (use exact slugs/titles you publish)
LINK: EducationOS::General Education Lane (Canonical)
LINK: Sholpan Upgrade Training Lattice (SholpUTL)
LINK: Phase Ladder / P0–P3 explanation
LINK: Error Taxonomy for Math (concept/method/slip/time)
LINK: Time-To-Core (TTC) / speed training module

END::CIVOS::DIRECTORY_BLOCK