The Education Inspectorate maps out the quality of schools. For example, it looks at the advice that pupils receive from primary school onwards, measures how long pupils take to complete their school career, their interim withdrawal rates, their exam results, the percentage of pupils who require additional support, and so on. All this data is collected and processed nationally according to the same standards and compiled into the so-called SchoolVenster, which can be found on the website. www.schoolsonthemap.nl.