According to figures released by the Mayor of London 31 Hackney schools exceeded legal limits for Nitrogen Dioxide in 2013.  The figures have only just been released after the previous Mayor failed to publish them.  

25 primary and 6 secondary schools in the borough are among the 443 schools in the capital exceeding the limits with Cardinal Pole School and de Beauvoir School among the worst in the borough.  

The Mayor has joined a legal action brought by Hackney-based environmental lawyers Client Earth to challenge the government's air pollution plans arguing that London can meet legal standards well before 2025, the date projected by the Government's Air Quality Action Plan.

https://www.london.gov.uk/press-releases/mayoral/hundreds-of-school...