The statistics, released by mayor of London Sadiq Khan, also shows that 86 secondary schools were above legal levels, exposing young people to dangerous levels of air pollution.
The three boroughs with the most number of primary and secondary schools in high pollution areas were Southwark, Westminster and Tower Hamlets.
Mayor Khan is calling for an urgent update of the figures, warning nearly 10,000 Londoners die every year due to toxic air.
Mayor Khan, said: ‘These figures are of great concern and show why it is absolutely right we act now on London’s polluted air. It is simply not acceptable that young Londoners – our children, grandchildren, family, neighbours and friends – are being exposed