Wednesfield High School fire suspected arson
A former school building has suffered "extensive damage" in a fire believed to have been started by arsonists.
Twenty firefighters tackled the blaze at the disused Wednesfield High School after being called at about 18:00 BST on Sunday.
A Wolverhampton City Council spokesman said they believed it had started in a hall.
The school closed in 2012 when pupils moved to a new £14.6m facility on a different part of the campus.
Phil Page, Wolverhampton City Council's cabinet member for education, said: "This was a mindless act which could have put lives at risk, and we are working closely with police and the fire service as they investigate the circumstances of Sunday's blaze.
"I am sure that former pupils and teachers who have happy memories of the old school will share my disappointment at the actions of these individuals."
Police closed off Lakefield Road while the fire was brought under control and people living in the area were urged to keep their windows and doors shut.
The building is due to be demolished in the next few months.
Mr Page said the fire had not had any impact on the new Wednesfield High School.