for college/uni's that subscribed to MS's service, you can get it for free from the link above, not all college/unis do this

for primary/secondary school

if you have a very early @yes.my Frog VLE account, that has a license, but only the really early ones
unfortunately the @moe-dl.edu.my one does not come with an office license

I dont think there is any discounted price available
for free alternatives, I like OnlyOffice and SoftMaker FreeOffice

you still do get the free windows/server

it's under Azure for Students
(note, not all accounts eligible, depends on college/uni)