You’re excused — now go fight the power!

A group of maverick history teachers at elite Beacon HS in Manhattan let their kids skip class Tuesday to join a Trump Tower protest, despite objections from colleagues, The Post has learned.

Roughly 200 kids from the Hell’s Kitchen public school were granted hooky passes at 11 a.m. and joined students from across the city to disparage The Donald, sources said.

But a rival faction in the school’s humanities department — English teachers — staunchly opposed the move and warned students that they would be penalized.

Department of Education authorities said Tuesday that no city students were officially allowed to leave campus and that those who did could be subject to punishment.

Beacon parents were never alerted and only found out about the impromptu field trip from their kids, according to sources.

The students joined a crowd that denounced Trump as a Hitlerian menace who must be stopped at all costs.

“No Trump, no KKK, no racist USA!” some chanted, while others blasted the president-elect for fomenting Islamophobia.

Other emancipated youngsters used Trump’s now infamous “locker-room talk” as inspiration for call-and-response routines.

“Whose p—y grabs back?” one female yelled. “My p—y grabs back!”

But one Beacon student who would have preferred reading and writing to midday rabble-rousing was unimpressed by the activism.

“Kids are crazy,” she said after the rally. “They fail to realize that America voted for him.”

But that was a minority opinion, as students from both private and public schools ripped Trump’s shock election last week.

A group of truant kids from private Poly Prep HS in Brooklyn told a Post reporter that they had been excused from school to join the resistance. But a staffer scoffed at the claim and said any kid found to have traded pencils for placards would face discipline.

Meanwhile, Chancellor Carmen Fariña sent a sympathetic note to teachers and administrators Monday.

“The outcome of the presidential election has left many youth and adult members of our community feeling confused or anxious,” Fariña said. “Undocumented immigrants and their families, LGBTQ students and staff, Muslims, and members of other religious, racial, or ethnic groups may be feeling particularly vulnerable during this time.”