9. The American School in Switzerland (TASIS)
Imagine living in a little 17th-century village nestled between Italy and Switzerland. Sounds like a dream come true, doesn’t it? Oh, but YOU can’t live this dream! No… Your kids can, though. Yeah, for a hefty $88,331 a year! But TASIS hasn’t become one of the most expensive boarding schools in the world in 2017-2018 based on its dreamland living status alone. Aside from being located in the 7th most peaceful nation in the world (according to the Global Peace Index), TASIS offers the opportunity for students to travel to different countries for the benefit of their studies and is made up of a teachers who not only genuinely care about the success of their students, but many of which (over 70%) hold advanced degrees.