A new league table has been published that ranks constituencies by the size of the real-terms funding cuts schools are facing.
The figures, produced by the National Education Union, show 83 per cent of constituencies will see real terms cuts in per pupil funding in 2020 compared with 2015 - despite extra funding being announced by the government.
Full story: New table ranks constituencies on school funding cuts
Revealed: The areas getting real terms funding increases
Background: Union say £12bn extra funding needed by 2023
The union has also highlighted how the majority of areas with the biggest drops in funding are in Labour held seats, while 13 of the 17 areas that benefited from increases were in Conservative held seats.
The union said the worst hit constituency, Dulwich and West Norwood, faces a £782 real terms per-pupil funding loss in April 2020, compared to 2015.
Here is a table showing the 20 areas with the biggest drops in per pupil funding, according to the NEU.