(NYPOST) — Staff at a Coney Island school where the principal barred kids from belting out “God Bless the USA” are singing a new tune: “Take This Job and Shove It.”

In a mass exodus, 25 employees — or 40 percent of the staff, including 11 of 28 classroom teachers, aides, secretaries and custodians — have fled PS 90, the Edna Cohen School, over the year, insiders tallied.

Most found jobs in other schools; some retired. Others are trying to escape a “toxic building,” they said.

Principal Greta Hawkins caused an uproar in June when she axed the rousing Lee Greenwood anthem from the kindergarten moving-up ceremony. First she insisted it “would offend other cultures,” then she claimed it was “too mature.”

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