Random person who caught the words 'boarding school books' in passing.

Have you read any in the Chalet School series?

Here's the Wiki link as a good starting point. these books have an active fandom as well.

http://en.wikipedia.org/wiki/Chalet_School

The mailing list group Girlsown discusses all sorts of school stories, boarding and day, also ballet books and stuff. I belonged for a few years. I think it's a google group now. The Chalet girls should be able to direct you if that's what you'd like. very active group with memebers in many coutries.