$40,000/year for tuition. High school tuition.

From an article about private schools in the New York City area:

Over the past 10 years, the median price of first grade in the city has gone up by 48 percent, adjusted for inflation... Indeed, this year’s tuition at Columbia Grammar and Preparatory ($38,340 for 12th grade) and Horace Mann ($37,275 for the upper school) is higher than Harvard’s ($36,305)...

“Within one to two years, every independent school will cost more than $40,000,” said one board member at a top school... Parents are reluctant to complain, at least with their names attached, for fear of hurting students’ standing (or siblings’ admissions chances). But privately, many questioned paying more for the same... “People don’t want to put a price tag on their children’s future, so they are willing to pay more than many of them can afford.”

As at most companies, a majority of the costs — and the fastest-growing increases — come from salaries and benefits, especially as notoriously low-paying private schools try to compete with public school compensation.

“Some New York schools have had a 5, 10 or as high as 30 percent increase in the cost of their medical plans,” said Mark Lauria, the executive director of the New York State Association of Independent Schools.

And paying teachers is only a piece of the puzzle. Léman Manhattan Preparatory School has a gym whose floor is cleaned twice a day. The Trinity School has three theaters, six art studios, two tennis courts, a pool and a diving pool.

When I was in high school, I'll bet the gym floor was cleaned once a week before home games.  Maybe.  There's more at the New York Times, plus over 500 comments.