Delays in the building of a new school have sparked fears Middlesbrough could be left short of secondary school places.
It had been hoped Outwood Riverside, currently in temporary premises on Russell Street, would move to a purpose built site in Middlehaven in 2023.
But earlier this year the completion date was pushed back to 2026.
The government has been asked to "expediate the process".
A letter to the education secretary - signed by Labour MP for Middlesbrough Andy MacDonald and town councillors - says children "desperately need the new school before 2026".
Plans for a 900-place secondary school was supported by Middlesbrough Council in 2018.
Outwood Academy Riverside opened in temporary accommodation in September 2020 which it was hoped would be for just three years.
