The Open University provides 0365 and doesn't accept open document format
I study with the OU (masters in software engineering at the moment) and one of my bug-bears is that I have to convert the ODF documents I write into MS Word format before submitting them.
I guess in order to make sure that students can produce MS Word format documents, they provide every student with an o365 account. While I really do understand that it is necessary to support the diverse student body (different financial means, ages, backgrounds, technical ability, etc.) as well as the teaching staff (who don't want to struggle with documents in different formats) I would like to see them get shot of MS. Unfortunately I think even MS would have difficulty arguing that the OU is not an academic institution :-).