The New York Post tells the story of Ed Boland, who left a comfortable life and career behind to teach in New York City only to find out he couldn’t handle it.

My year of terror and abuse teaching at a NYC high school

In 2008, Ed Boland, a well-off New Yorker who had spent 20 years as an executive at a nonprofit, had a midlife epiphany: He should leave his white-glove world, the galas at the Waldorf and drinks at the Yale Club, and go work with the city’s neediest children.

“The Battle for Room 314: My Year of Hope and Despair in a New York City High School” (Grand Central Publishing) is Boland’s memoir of his brief, harrowing tenure as a public-schoolteacher, and it’s riveting.

There’s nothing dry or academic here. It’s tragedy and farce, an economic and societal indictment of a system that seems broken beyond repair.

The book is certain to be controversial. There’s something dilettante-ish, if not cynical, about a well-off, middle-aged white man stepping ever so briefly into this maelstrom of poverty, abuse, homelessness and violence and emerging with a book deal.

What Boland has to share, however, makes his motives irrelevant.

Names and identifying details have been changed, but the school Boland calls Union Street is, according to clues and public records, the Henry Street School of International Studies on the Lower East Side.

Boland opens the book with a typical morning in freshman history class.

A teenage girl named Chantay sits on top of her desk, thong peeking out of her pants, leading a ringside gossip session. Work sheets have been distributed and ignored.

“Chantay, sit in your seat and get to work — now!” Boland says.

A calculator goes flying across the room, smashing into the blackboard. Two boys begin physically fighting over a computer. Two girls share an iPod, singing along. Another girl is immersed in a book called “Thug Life 2.”