A controversial Coney Island principal has pulled the plug on patriotism.

Her refusal to let students sing “God Bless the USA” at their graduation has  sparked fireworks at a school filled with proud immigrants.

Greta Hawkins, principal of PS 90, the Edna Cohen School, won’t allow  kindergartners to belt out the beloved Lee Greenwood ballad, also known as “Proud to be an American,” at their moving-up ceremony.

Five classes spent months learning the patriotic song, which skyrocketed in  popularity after the 9/11 attacks and the 2003 invasion of Iraq.

It was to be the rousing finale of their musical show at the June 20  commencement. The kids, dressed up for their big day, would wave tiny American  flags — which, as the lyrics proclaim, “still stand for freedom.”

But Hawkins marched in on a recent rehearsal and ordered a CD playing the  anthem to be shut off, staffers said.

She told the teachers to drop the song from the program.

“We don’t want to offend other cultures,” they quoted her as explaining.

The curt edict stunned both staff and parents.

“A lot of people fought to move to America to live freely, so that song  should be sung with a whole lot of pride,” said mom Luz Lozada, whose son,  Daniel, is in kindergarten.

The song has been sung at previous school events. Last year’s fifth-graders,  including another Lozada child, performed it at graduation.

“Everybody applauded and whistled,” the mom said. “They gave it a standing  ovation.”

Parents — many immigrants from Pakistan, Mexico and Ecuador — “love it,” Lozada said.

A teacher agreed: “It makes them a little goosebumpy and teary-eyed. I’ve  never come across anyone who felt it insulted their culture.”

Department of Education spokeswoman Jessica Scaperotti gave The Post an  explanation staffers said they never heard — that Hawkins found the lyrics “too  grown up” for 5-year-olds.

The song starts: “If tomorrow all the things were gone, I’d worked for all my  life. And I had to start again, with just my children and my wife, I’d thank my  lucky stars, to be livin’ here today.”

Scaperotti said the department supports the principal’s decision. “The lyrics  are not age-appropriate,” she said.

But Justin Bieber’s flirty song about teen romance, “Baby,” was deemed a fine  selection for the show. Hawkins had no problem with 5-year-olds singing lines  such as, “Are we an item? Girl, quit playing.”

The other songs: “We’re All Together Again,” popular at Scout campfires; “The  World is a Rainbow,” which celebrates diversity; “Shake Your Sillies Out” by  Raffi; and “You’ve Got a Friend in Me” from “Toy Story.”

Scaperotti noted PS 90 kids recite the Pledge of Allegiance and sing “America  the Beautiful” each morning. Insiders say Hawkins tried to end that tradition a  couple years ago but staff objected.

The principal, a Jehovah’s Witness, does not recite the pledge because her  religion forbids followers to salute any nation’s flag. Staffers gripe she  doesn’t stand in respect during the school-wide ritual.

The song uproar comes amid tensions. Hawkins has been called a tyrant and  bully by some staffers.

The DOE reprimanded her in 2010 after teachers complained she called the  school “racist” and declared: “I’m black. Your previous principal was white and  Jewish. More of us are coming.”

Scaperotti said Hawkins is being targeted by the teachers union and has  received hate mail, which is under investigation by the NYPD.

susan.edelman@nypost.com

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