Temporary classrooms across Warwickshire are being replaced in a £3.9m programme.
The county council plans to cut the number of temporary classrooms by nearly 25%.
There are currently 93 temporary classrooms at primary schools, and a further 122 in secondary schools.
Top of the council's priority list is Ashlawn School, Rugby, which has 13 temporary classrooms.
"Getting rid of temporary classrooms is one of our highest priorities for improving school buildings," said Councillor Richard Grant, cabinet portfolio holder for schools.