Arclo

An adaptive tutor for parents and their kids.

A diagnostic instrument for Singapore families

Know precisely where your child stands.

Fifteen minutes, twenty adaptive questions, one calibrated report. No tutors, no drilling — only measurement, and what to do next.

Free · no sign-up required · Math and Science, P3–P6

Primary 4 · Mathematicsn = 4,218 peers

0.78

Ability

28%

Percentile

±0.09

95% CI

Built on real measurement science

IRT

Rasch 1PL ability model

MOE

2026 syllabus aligned

5×4

Cognitive × domain matrix

CAT

Computer-adaptive testing

Sample report

Tan Wei Ming

P4 · Mathematics · 12 April 2026

The finding

Tan Wei Ming sits in the top 28% of P4 peers — ahead on calculation, behind on modelling.

0.78

IRT ability · ±0.09

28%

Percentile rank

AL3

Projected band

Competency scores

Calculation

Concept Understanding

Translation

Modeling

Reasoning

Where Wei Ming sits

Ahead of 72% of P4 peers nationally.

“We do not produce tutors. We produce an instrument — and then an action.”

Ready in fifteen minutes

15 minutes · free · no sign-up needed to begin