Vandals pushed in a side window of a satellite classroom at George Fox Middle School Friday night and set a fire that caused an estimated $20,000 in damage, fire officials said.
A school maintenance man reported the fire about 8:30 p.m., after an alarm summoned him to the school in the 7900 block of Outing Ave.
Fire officials said the blaze started at 7:30 p.m., but they did not say how the fire was started.