Tracker · v1.2
Learning-outcome index
Grade-appropriate reading and arithmetic by district, held to one definition across years so the series can actually be compared.
48.3%
Show the arithmetic +Hide the arithmetic −
What it measures
One task, one definition, one age band, repeated. Comparability is the whole product.
District spread, reported as the gap between the top and bottom decile rather than as a mean.
What it does not measure
School quality. A district's score moves for reasons that have nothing to do with its teachers.
Anything about individual schools. We do not publish school-level data and will not.
Sources and licences
Where every input came from, and when we took it.
- Retrieved 5 June 2026
- Retrieved 19 June 2026
