How are PG1 students graded in the Singapore-Cambridge Secondary Education Certificate (SEC)? Under Full Subject-Based Banding, a pupil who entered secondary school through Posting Group 1 (PG1) eventually sits each SEC subject at the academic level they are actually offering, whether G1, G2 or G3. From the 2027 examination, G1 subjects use grades A, B, C, D and E; G2 subjects use grades 1 to 6; and G3 subjects use grades A1, A2, B3, B4, C5, C6, D7, E8 and 9. The certificate displays the subject and its level. A PG1 student is not automatically graded on G1 for every paper.

For Punggol parents, the important practical distinction is between the grade the child earned, the subject level at which it was earned, and a mapped grade used only when a particular post-secondary admission score must combine subjects from different General levels. SEAB’s published mapping converts certain stronger G3 results to G2 equivalents and G2 results to G1 equivalents for specified aggregate calculations. It does not turn a G1 A into a G3 A1, guarantee a polytechnic place, or change the actual grades shown on the child’s SEC certificate.

Quick information:

• PG1: Secondary 1 admission route; not a national examination grade.
• G1 grades: A, B, C, D, E.
• G2 grades: 1, 2, 3, 4, 5, 6.
• G3 grades: A1, A2, B3, B4, C5, C6, D7, E8, 9.
• G3 → G2 mapping: A1–B3 becomes 1; B4–C6 becomes 2; D7 becomes 3; E8 becomes 4; grade 9 becomes 5.
• G2 → G1 mapping: 1–3 becomes A; 4 becomes B; 5 becomes C; 6 becomes D.
• When mapping applies: selected post-secondary admission aggregate calculations, not every classroom report or every course.
• School candidates: the school registers the pupil for national examinations at the applicable subject levels.
• First SEC: 2027 graduating cohort; students entering Secondary 1 in 2027 ordinarily graduate several years later.

1. Why one SEC certificate has three different subject grading scales

For many years, parents described secondary examinations through the older labels Normal (Technical), Normal (Academic) and Express. Full Subject-Based Banding removed those stream labels from mainstream secondary-school admission beginning with the 2024 Secondary 1 cohort, but retained different levels of academic demand for individual subjects. G1, G2 and G3 are therefore about the syllabus studied in a specific subject, not a public judgement about a student’s identity.

A pupil might study G1 English, G2 Mathematics, G1 Science and G1 Mother Tongue. Another might take more subjects at G2. A third may take a mixture of G2 and G3. When those students eventually sit SEC, the examination result must tell a receiving college or educational institution both what subject was examined and at what demand level. Merely printing a single letter or number without its subject level would conceal useful information.

This explains why SEAB retains different grading structures. The new certificate groups subject outcomes together without pretending that a G1 paper and a G3 paper test exactly the same curriculum. Under SEC, examination standards remain aligned with the corresponding former N(T), N(A) and O-Level levels, while the qualification is issued under a common name.

For parents, the useful language is specific: “The child is taking G2 Mathematics and received grade 3 in that subject.” Do not say “The child is a grade 3 student” when you mean the result of one examination. Precision protects pupils from being labelled by a single number.

2. Read the grades without mixing the scales

Subject level	Published grade scale	What to remember
G1	A, B, C, D, E	Letters, not numbers; an A is assessed within the G1 syllabus.
G2	1, 2, 3, 4, 5, 6	Smaller numbers represent stronger performance in that G2 subject.
G3	A1, A2, B3, B4, C5, C6, D7, E8, 9	Letter-number combinations and 9, reflecting the G3 assessment scale.

The scales should not be compared by appearance. A G1 A is not a claim that the pupil has earned a G3 A1. A G2 1 is a strong grade within the G2 assessment, not the same result as a G3 A1. The levels refer to different demands. Mixing these numbers is like comparing the fastest time in a beginner swimming class with the fastest time in an advanced competition without considering the event.

At the same time, parents should not dismiss a strong result at a lower level. It demonstrates attainment in what the pupil has actually learned and may support an informed discussion about more demanding study when appropriate. The next question is which skills are secure and which prerequisites remain missing, not whether the grade looks impressive on a relative’s screen.

SEAB gives these exact grading scales in the official SEC examination overview, last updated 14 May 2026. Use that page for verification rather than a table circulating without a publication date.

3. Why do parents keep hearing about “mapping”?

When pupils are allowed to study subjects at different levels, an institution evaluating applicants needs a fair, published method to calculate some aggregate admission scores. Imagine a pupil with G3 English, G3 Mathematics and three G2 subjects applying for a route assessed using an aggregate expressed at G2. Without a mapping rule, adding “B4” to “2” would make no mathematical sense. A conversion table supplies the permitted equivalent for that specific admission calculation.

The conversion is not a rewriting of the child’s original academic history. The SEC certificate records the actual grade at the actual subject level. The admission system uses a mapped value only when its rules require comparison on a common basis. This is why SEAB describes grade mapping as relevant to specific aggregate computations for post-secondary progression.

Parents should ask three questions whenever a brochure displays a mapped score: Which institution and course is the student applying for? Which aggregate formula does that route use? Which subject levels and grades can be included in that formula? Without these answers, a number that looks precise may be practically meaningless.

There is no single “SEC aggregate score” that automatically replaces every university, ITE, polytechnic, JC or MI requirement. Admission schemes use different subject requirements, minimum entry conditions and aggregate rules. A pupil’s eligibility depends on the actual route and intake year.

4. The SEAB G3-to-G2 grade mapping table

Actual G3 SEC grade	Mapped G2 value when required
A1, A2 or B3	1
B4, C5 or C6	2
D7	3
E8	4
9	5

For instance, if the pupil takes G3 Mathematics and scores A2, an admission exercise that requires the relevant G2 equivalent maps that subject to 1. If the G3 grade is B4, the mapped G2 value is 2. This is not a reward chosen by the school; it is the published SEAB mapping structure.

Notice that the table groups several G3 grades into the same mapped G2 value. That reflects a conversion for admission calculations, not a claim that those actual G3 grades are identical. A1 and B3 remain different grades on the student’s actual result even though both convert to G2 1 for an applicable aggregate.

Parents should not use this table to “convert” a weak G1 grade into a G3 grade. The published conversion goes in the stated direction when needed for a formal purpose. Inventing reverse equivalents would imply an academic achievement that the student has not demonstrated.

5. The SEAB G2-to-G1 grade mapping table

Actual G2 SEC grade	Mapped G1 value when required
1, 2 or 3	A
4	B
5	C
6	D

A pupil with G2 Mathematics grade 2 might have that result treated as G1 A if a specified admission route requires a G1 aggregate using the subject. But the student’s actual result remains G2 grade 2. Converting it for a particular application does not erase the stronger syllabus studied.

Here is a helpful distinction. A child with G1 Science grade A has demonstrated strong attainment within the G1 syllabus. A child with G2 Science grade 2 may have that grade mapped to a G1 A for a relevant computation. The two may lead to the same mapped letter in a particular formula, but the academic study and examination levels were different.

Neither pupil should be told that the grade proves they are “better” or “worse” as a person. The purpose of the table is administrative comparability for certain progression pathways, not a new public ranking of children’s identities.

6. How a G3 result is mapped all the way to G1

SEAB explains that when a G3 result must be used in a G1-level aggregate, it is mapped in two steps. First apply the G3-to-G2 table. Then apply the G2-to-G1 table. Do not skip directly to a home-made conversion that seems intuitive. The two published tables determine the result.

Suppose a student receives G3 English grade B4. The G3-to-G2 table maps B4 to G2 2. The G2-to-G1 table maps G2 2 to G1 A. That sequence is relevant when a particular admission computation needs the G1 equivalent. The original SEC still shows G3 English B4.

Now suppose another student takes G3 Science and receives D7. That maps to G2 3, which in turn maps to G1 A. Parents should not interpret this as the student having achieved the same G3 standard as a child with A1. Mapping compresses information into an administrative equivalent and is used only for the specified calculation.

This is why schools and admissions offices should explain precisely which grade and aggregate they are referring to. A school counsellor can help the child distinguish a certificate grade, an admission formula and the course’s actual prerequisite.

7. Worked example: five subjects with different levels

SEAB provides an illustration of an English Language, Mathematics and Best Three Subjects (ELMAB3) computation expressed at G2 level. Consider the following fictional SEC results. They demonstrate the mapping mechanism, not the admission result of a real child or a promise of a particular programme.

Subject and actual level	Actual grade	Value used at G2 for this example
G3 English Language	B4	2
G3 Mathematics	A1	1
G3 Science	B3	1
G2 Combined Humanities	2	2
G2 Chinese Language	5	5

The relevant mapped values are 2, 1, 1, 2 and 5, producing an illustrative ELMAB3 total of 11. This is an example of how the aggregate can be formed. The programme’s own eligibility rules still determine whether the combination is valid, whether other minimum entry requirements apply and whether places are available.

A sixth subject such as G1 Computing grade A might appear on the certificate but not enter this particular five-subject ELMAB3 calculation. It would be a mistake to replace one of the specified categories simply because the sixth subject has an appealing letter grade. Aggregate formulas identify which subjects count.

The essential lesson for parents is not the number 11. It is the sequence: identify the admission formula, verify permitted subject levels, map only where the rules say to do so, then add the applicable values. A calculator does not fix a wrongly chosen set of subjects.

8. What about pupils with mostly G1 subjects?

A pupil offering a predominantly G1 combination should understand the G1 grading scale and the post-secondary routes that recognise those qualifications. ITE publishes pathways for SEC G1 holders, including Higher Nitec options and an Enhanced Foundation Programme in appropriate cases. The fact that a pupil’s subjects are at G1 does not make the certificate invalid or meaningless.

ITE’s site, updated 27 October 2026, distinguishes pathways for applicants with G1 and different numbers of passes, as well as G2 and G3 qualifications. Course-specific prerequisites can include English, Mathematics, other subjects, interviews or relevant health and aptitude conditions. A parent should therefore examine the intended course, not stop at the broad phrase “G1 pathway”.

For a child entering Secondary 1 in 2027, the eventual post-secondary application is years away. The appropriate plan is to build strong language and numeracy now, review the actual subject levels offered at school, and revisit admission requirements as the pupil progresses through upper secondary. Do not promise that a course listed today will have identical entry criteria years later.

See ITE’s Secondary School Leavers guide for current route information.

9. What is ELMAB3 and when do pupils use it?

ELMAB3 is an aggregate using English Language, Mathematics and the best three applicable subjects under the specified scheme. Families may encounter it in routes that recognise G2-level academic results, including some Higher Nitec admission arrangements and Polytechnic Foundation Programme-related criteria. But the exact list of permitted subjects, the required grades and the relevant threshold are determined by the scheme for the intake year.

It is not safe to take any five subjects that look strongest and declare an ELMAB3 score. English and Mathematics are named components, and the “best three” subjects must be acceptable under the applicable admissions rules. A student might have a strong grade in a subject not counted for a particular pathway. Reading the requirements before computing is a basic but frequently missed step.

Parents can teach the child to read admission information as a series of conditions. First, is the qualification accepted? Second, does the student meet the subject-level mix? Third, are compulsory subject grades met? Fourth, is the aggregate within the current limit? Fifth, does the student meet any course-specific conditions? Only after those questions should the family discuss preference ranking and course availability.

This prevents the stressful discovery that an apparently qualifying total is not valid for the course the pupil wanted. Academic guidance is most useful when it addresses prerequisites in time to influence subject choices.

10. Is a mapped grade a free pass to polytechnic?

No. Grade mapping does not create admission eligibility by itself. Polytechnic courses can require particular subject levels, a minimum number of subjects, acceptable aggregate scores and course-specific minimum entry requirements. A pupil whose grades map favourably for one computation may still be ineligible for a course because a required subject was not offered at the correct level.

Parents should distinguish a pathway existing in principle from a particular student meeting its criteria. Full SBB is intended to make progression more flexible for pupils studying combinations of General levels. But flexibility is not the same as unrestricted entry, and it does not remove the need to perform well in the subjects actually offered.

The practical family goal is therefore to keep options open by developing foundations, choosing suitable subject levels and understanding which additional subjects matter for fields that genuinely interest the child. Pushing a pupil into a higher level that they cannot manage may be counterproductive. So can refusing an appropriate challenge merely because the child entered through PG1.

Ask the school’s Education and Career Guidance adviser about requirements when the student reaches an appropriate decision point. The adviser can connect subject combinations to available routes rather than rely on general internet claims.

11. Does the SEC combine all subjects into a single final grade?

The SEC is one certificate recording subjects and the levels at which they were examined. It is not one universal mark that determines every destination. Each subject retains its grade, and admissions systems decide which subset to use for a given route. A pupil can therefore have a strong result in one academic field and a more modest result in another without the certificate pretending those differences do not exist.

This is important for a PG1 pupil who has grown through targeted subject-level opportunities. Suppose the child is doing well in G2 Mathematics while studying G1 English. The certificate can reflect that combination. The family should not erase the Mathematics achievement or pretend that it automatically satisfies a course requiring G2 English. Both facts can be true at the same time.

Explain the principle to the child through a simple analogy: a passport contains several pieces of information, but which piece matters depends on the destination. A qualification lists real academic achievements; the receiving programme decides which requirements matter for entry. There is no single magic conversion that makes every route open.

12. When is the first SEC examination, and who sits it?

The first SEC national examination is in 2027 for the relevant graduating cohort. SEAB explains that the separate GCE Normal and Ordinary Level qualifications are last awarded in 2026. The new certificate includes subject results at G1, G2 and G3. The published SEC exam calendar places English and Mother Tongue written papers in September, with other written papers generally from October into November.

A parent whose child starts Secondary 1 in January 2027 should not confuse the exam’s first national year with the child’s own graduation year. The child usually begins with lower-secondary learning and reaches national examinations several years later. The currently published grading structure is an essential reference, but later regulations and course requirements must be rechecked for the student’s actual cohort.

For school candidates, the school organises national examination registration. Parents should follow official school notices rather than attempting to register a Secondary 1 child for SEC immediately. The first two years are about building foundations and discovering an appropriate subject combination.

13. Why grades alone do not show the child’s actual mistake

A grade communicates an overall outcome for a particular assessment. It does not identify the conceptual misunderstanding behind each lost mark. A student receiving a G1 Mathematics B may have one serious weakness in fractions, a cluster of small accuracy errors, or incomplete reasoning in unfamiliar problem contexts. Those situations call for different support.

Parents can study a representative paper with the child and find the first incorrect mental step. In a negative-number question, did the pupil misunderstand subtraction? In a word problem, did they identify the relevant quantities? In a graph, did they read the scale? In a Science question, did they separate an observation from the explanation? These questions are more actionable than repeatedly asking how to turn B into A.

Good corrections teach students to explain why the right method works. Simply copying an answer key can produce the appearance of improvement without transferable understanding. A child is learning when they can solve a similar but unfamiliar problem after feedback.

This also helps when considering a subject-level increase. A higher level should be based on readiness for more demanding content, not the family being impressed by the surface appearance of a grade.

14. Punggol example: a pupil strong in Mathematics but still developing English

Consider fictional student Jo, who enters secondary school through PG1. She demonstrates aptitude in Mathematics and receives an eligible offer to study the subject at G2. Her English remains at G1 while she develops reading comprehension and writing organisation. Her parents initially worry that her grades will be “mixed” and difficult for others to understand.

The family learns that the SEC shows each subject and its level. There is no requirement for all academic subjects to become a single General level in order to receive a meaningful certificate. Jo’s task is to learn the Mathematics curriculum properly while also improving English at a suitable pace. The child’s progress becomes visible as specific knowledge, not as a dramatic change in her Posting Group label.

Years later, if Jo applies for a post-secondary course, the relevant admission formula and prerequisites will determine which results count. A mapped grade may help a particular calculation, but it cannot replace an English qualification at a required level. The family plans with that distinction in mind.

Jo is fictional. The example shows how a mixed subject-level education can work; no future course admission or school offer is guaranteed.

15. Punggol example: a good G1 result without an immediate level change

Imagine another fictional student, Ben, who scores well in G1 Science after a term of steady work. His family wants the school to move him to G3 immediately. A supportive conversation begins by celebrating improvement and asking the teacher what Ben is actually ready to learn next. A strong G1 grade is positive evidence, but it is not automatically proof of the prerequisites required for a higher-level syllabus.

The school may consider subject-level review at suitable points, looking at performance, aptitude, interest, workload and readiness. It may recommend further foundational practice or a bridging plan. The family can ask what scientific reasoning Ben demonstrates independently and which concepts would need strengthening before a move.

The aim is to help Ben progress, not collect the most impressive letter-number combination as quickly as possible. Some pupils benefit from an early increase in demand. Others make more sustained progress after consolidating the material. The right decision uses actual work and school guidance.

16. Eight common mistakes when reading SEC results

• Confusing PG1 and G1: the first is the posting route; the second is an individual subject level.
• Calling G1 A an A1: those grades are from different scales and different exam demands.
• Using grade mapping for every report-card comparison: SEAB applies mapping for specified admissions computations, not all ordinary school assessments.
• Reverse-mapping from G1 A to G3 A1: not a published equivalence and academically misleading.
• Adding any five subjects for ELMAB3: subject selection must comply with the actual admission formula.
• Assuming the one SEC certificate makes every exam paper identical: G1, G2 and G3 remain distinct levels.
• Guaranteeing a route because a mapped score looks good: minimum subject grades, course prerequisites and available places still apply.
• Using 2028 entry rules as permanent rules for a child graduating later: check the actual intake-year criteria.

These mistakes are avoidable. Most come from treating an administrative abbreviation as a complete explanation of a child’s educational future. The more useful approach is to name the subject, level, actual grade and intended application before discussing what the result can do.

17. Four-week family learning and pathway plan

Week 1 — Learn the vocabulary of SEC

Write down the difference between Posting Group, General subject level, SEC certificate grade and mapped admission grade. Ask the child to explain the terms in their own words. Keep the current SEAB grading table available as a reference, not as a daily source of anxiety.

Week 2 — Identify the real strengths

Review work in English, Mathematics, Science and Mother Tongue. Identify concepts the child can explain independently and the mistakes that recur. Avoid converting current school test percentages into an invented future SEC grade. The assessment context and school criteria must be understood first.

Week 3 — Investigate one future route

Choose one broad area that genuinely interests the child—technology, healthcare, hospitality, design or another field. Look up the current ITE or other educational pathway and note the subject requirements. Explain that this is a research exercise, not a binding career decision.

Week 4 — Turn information into a small study action

Select one foundation to strengthen over the next month, such as fraction reasoning, reading comprehension or interpreting graphs. Define what independent improvement would look like. Ask the school for guidance if subject-level changes may become appropriate. A useful plan ends with better learning, not a longer list of acronyms.

18. When should parents consider outside tuition?

Tuition is sensible only when a specific learning problem has been identified and the proposed support addresses it. A child preparing for G2 Mathematics may need to understand algebraic equations. A pupil working towards stronger English may need guided comprehension and precise vocabulary. A tutor should not merely chase mapped grades by giving more worksheets that repeat the same misunderstanding.

At eduKate’s small-group tuition in Punggol, a meaningful plan begins with the student’s actual subject level, errors and school expectations. Sign up for Mathematics tuition only after the student’s starting position is clear. PG1 does not automatically require tuition, and the SEC grading table is not a diagnosis of an individual pupil’s learning needs.

Parents can ask what the child will be able to do independently after several weeks of suitable support. A good answer might be “explain the balance principle in a linear equation” or “identify and justify evidence in a Science response.” Those gains are foundations for future choices, whether the eventual examination grade is at G1, G2 or G3.

Frequently asked questions about PG1 and SEC grading

Does a PG1 pupil only get G1 grades?

No. The pupil takes each academic subject at the level offered. A PG1 child may be eligible for G2 or G3 in particular subjects.

What are the five G1 SEC grades?

A, B, C, D and E.

What are the six G2 SEC grades?

1, 2, 3, 4, 5 and 6.

What are the G3 grades?

A1, A2, B3, B4, C5, C6, D7, E8 and 9.

Does G3 B4 map to G2 4?

No. Under SEAB’s table, G3 B4 maps to G2 2 for an applicable admission calculation.

Does G2 grade 3 map to G1 grade C?

No. G2 grades 1–3 map to G1 A under the published table.

Can G1 A be converted to G3 A1?

No such reverse mapping is provided for admissions. The child must demonstrate the relevant subject-level achievement.

Does grade mapping change the grade printed on SEC?

No. It is a method used for specified aggregate admission computations, not a rewrite of the original certificate.

What does ELMAB3 stand for?

English Language, Mathematics and Best Three Subjects, subject to the rules of the particular admissions exercise.

Can ITE accept G1 results?

Yes, ITE publishes pathways for eligible G1 qualification holders, with course-specific and other entry conditions.

Does one SEC certificate guarantee polytechnic access?

No. Courses still have subject-level, grade, aggregate and other admission requirements.

Will a child entering Secondary 1 in 2027 sit SEC in 2027?

Not ordinarily. The first SEC in 2027 is for the graduating cohort; a new Secondary 1 pupil would typically graduate several years later.

Should we pay for extra tuition because of grade mapping?

Not automatically. Identify the child’s actual subject gaps and the support already available before making an extra commitment.

Official references and connected eduKate reading

• SEAB: SEC grading system and grade mapping tables
• SEAB: Replacement of N- and O-Level qualifications from 2027
• ITE: Current routes for G1, G2 and G3 qualification holders
• MOE: Post-Secondary Admissions Exercise
• eduKate Punggol: How PG1 students can take G2/G3 subjects
• eduKate Punggol: SEC and pathways after PG1
• eduKate: Secondary 1 Mathematics foundations and worked reasoning

Reviewed 6 November 2026 against SEAB’s SEC information and ITE’s 27 October 2026 guidance. Mapping applies only where an admission scheme specifies it. Rules can change for later cohorts; always check the actual qualification and programme.