ARSONISTS targeted the old Hastings College site twice this week.
Firefighters were called out to the Archery Road site at 5.20pm and 7.20pm on Thursday (September 27) and extinguished the flames.
Nobody was hurt.
The college has lain derelict since Sussex Coast College was opened at Station Plaza three years ago.
In June this year, a bid to build 150 homes on the site was thrown out by councillors but developer Gladedale is appealing the decision and a public inquiry is due to be held next month.