Introduction
In 2021, Singapore replaced the PSLE T-score system with Achievement Levels (ALs). For many parents who went through the old system, the change can be confusing — and it has real implications for how students should approach their exam preparation.
What Is the Achievement Level System?
From a single score to a banded grade
Under the old T-score system, a student’s score was calculated relative to their cohort — meaning performance was judged against how well other students did in the same sitting, creating high-stakes score competition.
Under the AL system, each subject is graded on a fixed scale from AL1 (highest) to AL8 (lowest). The overall PSLE score is the sum of all four AL grades, ranging from AL4 (best possible) to AL32. Secondary school posting is based on this aggregate score, but within each band, students have more flexibility to choose schools based on interest and fit.
What This Means for Study Strategy
Band thresholds change everything
Under the T-score system, every single mark mattered because your score was relative. Under ALs, what matters most is crossing each band threshold cleanly. The practical implication: students should identify which subjects they are closest to improving by one AL band and prioritise those. A student sitting at the border of AL3 and AL2 in Science will benefit more from targeted Science tuition than from grinding a subject they have already secured at AL1.
The Importance of Consistency Across All Four Subjects
Four average grades can outperform three great grades and one weak one
Under ALs, a single poor subject — AL5 or AL6 — significantly damages the aggregate score. This means consistent performance across all subjects matters more than excelling in two or three while neglecting one. Parents who focus exclusively on their child’s strongest subjects while ignoring a weak one are working against the system’s structure.
How OutClass Aligns Tuition With the AL System
Targeted preparation for each band threshold
At OutClass Education, we start every new student with a diagnostic assessment that identifies not just their current level, but where they sit relative to each AL band threshold. This allows us to set clear, achievable goals — not just “do better” but “move from AL3 to AL2 in Science by Term 3” — and build a lesson plan that targets that specific improvement in our max-6 classes.