Thameside Primary School in Caversham has applied to keep a temporary double classroom building housed on its playing fields.
Approval for the single-storey classroom building was granted in 2014 on a temporary basis.
The school wishes to retain the structure so it can be used to teach special education and disabled (SEND) pupils for at least five years.
Planning agents say the school is struggling with increasingly demanding cohorts of SEND pupils who need additional space separate to the mainstream classrooms.
To view the application, log on to Reading Borough Council’s planning website and search for reference 231494.