Schools have historically liked buying Macs; I'm not sure how true that is anymore. Chromebooks have swept the schools, both because they're very cheap and because Google has, from what I've read, just terrific classroom management software compared to most competitors. More recently Apple has been pushing the iPad into education pretty hard -- competition from the Chromebook is arguably why the $329 iPad ($299 for education) exists. Macs are increasingly positioned as being for teachers and administrators, not students.