Not choosing a Mac for school students should have always been a no brainer because, as mentioned a) cost, b)what benefit do Macs provide over say Windows laptops or chromebooks for high school students?
Apple did a real good job marketing their products to schools all over the country though.
I imagine high school students require a device to do basic coding, assignments, office applications (presentation, word), browsing and maybe basic image editing. Sure, in professional settings I can understand people choosing Macs, but but for high school students it just seems overkill for their use case.
Anyway I'm glad to see schools coming to their senses and move away from apple devices...into another (cheaper) walled garden.