A portion of a religious school attached to a Long Island synagogue was destroyed by a fast-moving early morning blaze Tuesday that required four departments and more than 200 volunteer firefighters to extinguish.

The fire broke out just after 6 a.m. Tuesday in the Sondra and David S. Mack Religious School and was under control shortly after 8, a fire official said. The school is next to Temple Israel, a conservative synagogue serves more than 1,000 families, according to its Web site.

News video from the scene showed smoke and flames billowing from the two-story school; most of the damage was to a ballroom in the building, officials said.

No injuries were reported, but all classes and other activities at Temple Israel in Great Neck. Calls for comment left with synagogue officials were not immediately returned.

The cause of the blaze was under investigation.