I'm from the U.S., but also interested in this topic. The school system where my son goes and I work as a substitute all have chromebooks and use Google classroom. In Tbilisi, where my wife is from and our son went part of the year to school, they give out laptops with Windows 11 and they're managed by the Ministry of education. It's really annoying, because I tried to install some software for him and it was blocked.
I worked as an ESL teacher in Georgia (the country) in 2012 and the school had some computers with Ubuntu and some with Windows. I sat down at an Ubuntu desktop and a student says "No no, this is bad. Here is windows." :(
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