A Stuyvesant High School junior has been busted for setting two small fires at the lower Manhattan school, authorities said today.

Mohammed Hassan, 16, set the series of fires in two student bathrooms on Nov. 17, police said.

No one was injured.

The teen was arraigned on two counts of attempted arson and two counts of reckless endangerment in Manhattan Criminal Court. He was freed this afternoon on $2,500 bail.

Cops said Hasan was caught on surveillance video leaving the area where the fires were set.