There are at least 50 universities in the U.S. that charge over $60,000 a year to attend, an unfathomable amount for college. But what about high school?

For the fourth year in a row we've rounded up the 50 most expensive boarding schools in the U.S. Only one boarding school on our list exceeded $60,000, but the number of schools that come close to that amount continues to rise.

These elite schools come with impressive perks like iPads for every student, state-of-the-art athletic and academic facilities, and, sometimes, tickets into the Ivies.

To create this list, we looked at tuition, room and board, and mandatory fees, including one-time fees where applicable, to calculate the total cost for the 2014-15 school year. In instances where the school listed a variety of expected expenditures for books and other required materials, we used the average. (Special-needs schools and daytime-only schools were not taken into consideration for this list.)