PSLE School Posting 2021: How the AL System Changed Secondary School Admission

Quick Answer: The 2021 PSLE school posting exercise was the first conducted under the Achievement Level (AL) scoring system, which replaced the T-score. Under AL posting, secondary school places are allocated based on a student's total score (4–32), with tie-breakers applied in this order: citizenship, school choice order, and computerised balloting. The shift to AL banding meant more students shared the same total score, making school choice order more significant than it was under the old system.

The 2021 PSLE cohort was the pioneer batch for the new posting system. For parents who had experienced the T-score system themselves as students, the change required learning a new framework for understanding school options, cut-off points, and the strategy of listing six school choices. Several years on, the system is now well-established, and each year's posting exercise produces updated indicative AL score ranges that guide the next cohort.

This article explains how the 2021 posting exercise worked under the new system, what changed from the T-score era, and how the posting rules continue to shape secondary school admission today.

How the 2021 PSLE Posting Exercise Worked

The PSLE school posting exercise is the annual process by which Primary 6 students are allocated to secondary schools based on their PSLE results and their ranked school preferences, managed by MOE's Secondary 1 (S1) Posting system.

In 2021, the process followed these steps: students received their PSLE results with AL grades for each subject and a total score out of 32; students and parents submitted a list of six secondary school choices in order of preference via the S1 Internet System (S1-IS) or through the student's primary school; MOE's computerised system ranked all students by their total PSLE score, then applied tie-breakers where scores were identical; and students were posted to the highest-choice school on their list that still had vacancies when their turn came in the ranking.

The fundamental logic was the same as under the T-score system, but the AL banding meant that more students arrived at the same total score, and thus tie-breakers were invoked more often.

Key Changes from T-Score Posting to AL Posting

How School Choice Order Works Under AL Posting

Under the AL posting system, school choice order is the second tie-breaker after citizenship. This means if two Singapore Citizen students both score 10 and both apply to the same school, the one who ranked it higher gets the place. This is a genuine priority — not a tie-breaker that rarely activates. Because more students share the same total score under AL banding, choice order is invoked frequently.

The practical rule for parents is: list schools in the order you genuinely prefer. Do not try to "game" the system by putting a less popular school first as a safety choice — if your child's score meets the cut-off for that school, they will be posted there, and you will never know whether they could have gotten into the school you actually preferred but listed second. Each year, some families learn this lesson the hard way.

Understanding Indicative AL Score Ranges

MOE publishes indicative AL score ranges for each secondary school based on the previous year's posting exercise. These ranges show the lowest and highest AL scores of students admitted to each school in that year. However, a range is not a guarantee: this year's cut-off may shift based on demand and the cohort's score distribution. Parents should treat the indicative range as a guide and include a mix of aspirational, realistic, and safety schools across their six choices.

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FAQ

How many school choices can I make in the PSLE posting exercise?

Six choices, ranked in order of preference. Students who are not posted to any of their six choices are posted to a school with vacancies near their home, which may not be a school the family would have chosen. Listing at least two realistic safety schools that the student's score comfortably meets is a sensible hedge against this outcome.

What happens if two students have the same score, same citizenship, and same school choice order?

When all tie-breakers are exhausted — same score, same citizenship, and same choice order — computerised balloting decides. This is rare but does occur at the most popular schools where many applicants share the same competitive total score.

Can the 2021 AL score ranges still be used as a guide today?

The 2021 ranges were the first under the new system and have been refined each year since. It is better to use the most recent indicative ranges published by MOE for your child's cohort year, as cut-offs shift with demand and cohort score distributions. However, the 2021 posting established the baseline pattern that subsequent years have followed.

Summary

The 2021 PSLE school posting exercise marked the transition from T-score-based admission to AL-based admission. Under the new system, each student's total AL score (4–32) determines their ranking for secondary school posting, with tie-breakers applied more frequently than before. School choice order became genuinely important — families should list six schools in true preference order and include aspirational, realistic, and safety choices. The posting process is fundamentally the same each year, and MOE's indicative AL score ranges, updated annually, are the best guide for making informed school choices.