UPLANDS School is closed today after a pipe burst in the early hours of the morning.
Staff are clearing about 4ins of water from the reception and hall area of the special school.
Headteacher, Jackie Smith, said they are hoping to open tomorrow.
"We were hoping we could make the school safe for our young people today because our parents desperately depend on us," she said.
"The judgement call was made this morning that we would only open to staff."
She said the website was down as the server had been affected by the incident but they would be phoning every parent this afternoon to update them on the school's progress.
The classrooms have not been damaged but the security system on the classroom doors is currently out of order.
Uplands School, which is in Tadpole Lane, teaches pupils with severe or profound and multiple learning difficulties.