Several chunks of Whitman High School's roof blew off Monday night as Hurricane Sandy brought high winds and rain to the area.
The school's north gym, a separate building, is serving as a Suffolk County Red Cross shelter. It is undamaged.
A volunteer said that there were only about 10 people using the gym as of about 5:30 p.m.
Dr. David Bennardo, the South Huntington schools superintendent, had announced Monday afternoon that the district would cancel classes Tuesday because of concern about the weather.