7. The American School in Switzerland (TASIS)
Location: Switzerland
Student-teacher ratio: 6:1
Tuition: $84,571
There are several now, but this was the first US boarding school to be founded in Europe, in the Swiss mountains. Usually, there are 13 students per class. TASIS has over 700 day and boarding students. If the number seems very high, that’s because they have pre-kindergarten and postgraduate students, too. About 265 students are aged between 12-19 and they are living on the campus. Another impressive number is 60. That’s how many different nationalities are attending the school at the moment.