How this is built.
Scores are percentiles within our London cohort: your score is relative to other London areas, not absolute. Schools come from the DfE GIAS register (open schools only). Crime is from data.police.uk, latest available month. Ofsted single-word judgements were withdrawn in Sept 2024. We'll add the new report-card grades as they roll out from late 2025.
Family density is drawn from ONS Census 2021 household composition data at LSOA level. We map each postcode to its representative LSOA and rank it against the 32 London postcodes in our cohort.
Commute times are pre-calculated via the TfL Journey Planner API for a weekday arrival at 08:15, from the centre of each postcode to Waterloo, King's Cross, Liverpool Street, Canary Wharf, Paddington and Victoria.
- No GIAS schools matched outcode IG1. Rebuild src/data/london-schools.json if this outcode should be covered.