They say lightning never strikes twice, but it has — in a good way — at Andries Hudde MS in Flatbush, which for the second time in less than six months has fended off a proposal to co-locate a charter school inside its building.

The city’s Panel for Educational Policy was set to approve the co-location of Brooklyn Prospect Charter School inside Hudde’s building at its meeting on Oct. 30, but the charter school suddenly pulled its proposal with just three weeks to go before the vote.

Hudde Chapter Leader Deborah Sarria said the reasons for the proposal’s withdrawal are unclear, but she credited the school’s parent association, which she said “has become a force to reckon with.”

“Everyone thought we were a pushover,” Sarria said. “But the parents wanted their voices heard.”

While the DOE claimed the building is underutilized, teachers and parents disagreed and feared the disruption the co-location would cause. Each grade at Hudde — 6th, 7th and 8th — is on its own floor.

“There’s a whole host of things that are done in those rooms that aren’t shown because they’re not classes,” said English teacher Evan Silkworth, who heads the School Leadership Team, when the co-location was considered last year. “If you really look, all those spaces are being used. The utilization report the DOE did is way off.”

The parents were prepared for a knockdown fight, according to UFT Brooklyn Parent and Community Liaison Betty Zohar.

“They met every Thursday from the time the proposal was announced in mid-September right up until it was pulled,” Zohar said. “They were very organized, with a real strategy, and determined to fight back.”

A large part of that strategy, Zohar said, was to organize for the Oct. 22 hearing at the school. To beef up their numbers for the protest, the parents distributed fliers and called their fellow parents. They also networked with politicians and community organizations and, in an effort to build solidarity with other schools facing similar battles, attended the school-based hearings at nearby Seth Low MS and Roy H. Mann MS, both of which are also in co-location fights.

Last May, the Panel for Educational Policy was forced to yank the charter school’s proposal a day before it was to be voted on when it was revealed that the school, which was authorized to serve grades 6-12, had failed to indicate that it also intended to add grades K-5.