London is in danger of running out of places for high school students, a major new report has warned.
The population of secondary school pupils is set to exceed the number of places available because boroughs are not receiving enough funding to create new places, a London Councils study says.
An explosion in the growth in pupil numbers in high schools will see demand overtake primary school places for the first time in 2017/18, the study says.
The think tank is calling for more funding for secondary school places - which it says cost around £6,000 more per pupil to create, on average, than primary places.
More than 47,000 additional secondary places are needed over the next five years, or pupils will miss out, the report finds.
Overall, London will be 110,364 places short by 2021, it says.
London secondary schools 'crisis' in numbers:
Interactive map shows shortfall across boroughs:
Peter John, London Councils’ spokesman on children, skills and employment, said "the clock is ticking."
"Overall, London's pupil population will have increased by a staggering 25 per cent over the course of this decade, yet London boroughs do not receive enough funding to fully cover the cost of building capacity in local schools."
The Department for Education said it is "delivering high-quality school places so every child, regardless of background or ability, can go to a good local school.