Parents and pupils have marched from Cwmcarn Village to Cwmcarn High School today to show support for the school.
The site shut last year after abestos was found.
Parents and pupils have told ITV News that they are worried about its future.
More top news
Whilst it should be drier than Wednesday, some rain is still expected.
It will stay largely cloudy tonight and there will be some further rain around, with central parts perhaps staying driest.
ITV Wales understands the reason for the inquiry call stems from concerns raised at the end of 2016 over a former healthcare support worker.