Displaced students on Long Island will attend class at a nearby Catholic church Tuesday, after a fast-moving fire gutted most of their school.

South Bay Elementary in West Babylon remains largely unsalvageable after flames ripped though the 1950s-era school just after 10:30 p.m. Thursday. Once flames reached the old, wooden frame, the blaze picked up speed, firefighters said.

"It's up there as one of the more difficult fires we've had to deal with," said West Babylon Fire Chief, Jim Campbell.

No one had been inside the school at the time. Students and teachers had been off last week for winter break.

More than 300 students have been displaced from the K-5 school. In a prepared statement, Superintendent Anthony Cacciola said the district plans to use Our Lady of Grace Roman Catholic Church on Albin Avenue in West Babylon as temporary classroom space.

Teachers will report to the church on Monday to set up classrooms. Students will return to class on Tuesday, but emotions are still running high.

"It's very difficult just thinking about how all of the things are gone, and all of the memories that we had there," said one student, as she pushed back tears.

Though the incident still remains under investigation, officials said flames started in the boiler room and the fire does not appear to have been suspicious. Investigators have not concluded whether the boiler was involved in the fire.

"It's really hard because I remember the school being a beautiful place," said another student. "Now it's just fire and wood and everything, burnt down."