Check on EducaandOS. It’s my region’s school distro. It was absolute crap around 15 years ago, when they launched (names Guadalinex Edu), but it was preinstalled in school laptops so we learned to use it.
Right now it’s pretty decent and simple enough to just throw it into a kid’s computer, but sadly nobody gives a fuck about it. It would be so cool if more institutions tried to pull projects like this