6. Le Rosey
Location: Switzerland
Student-teacher ratio: 5:1
Tuition: $116,067
Le Rosey is right in the middle of our list of best boarding schools in the world in 2017. It is world famous for being among the most expensive and the most prestigious and elite boarding schools. It usually comes first in similar lists, but the truth is that one teacher can tutor five students, which isn’t as impressive as our first place. There are 420 students, and some of the most notable ones were King Albert II of Belgium, the Shah of Iran, Prince Rainier of Monaco, and King Farouk of Egypt.