International Benchmarking

The Cognitive Abilities Test (CAT4) and Progress Test Series for English, maths and science are standardised against the UK school population. Each year we carry out benchmarking exercises to compare the scores achieved by thousands of international students globally against the original standardisations for these assessments.

A note on Standard Age Scores

The Standard Age Score (SAS) is based on the student’s raw score, but then adjusted for age and scaled to a mean of 100. When comparing SAS scores, a difference of less than 3 points is not usually seen as statistically significant.