Linux is kind of sort is already in elementary and high school use. Schools in my state are often issuing Chromebooks to students for use. They are cheap, easy to manage and get support for, and can do the things students need to do. And the only ones really using all those old Macs that infest schools are the teachers. Though in my local school, the 2nd, 3rd, and 4th grades are using iPads but switch to Chromebooks in 5th grade.
One can complain about google being evil all you want, but they do offer all the free tools schools and teachers and students need for their lessons.And if COVID taught schools anything it was that we could teach classes online if necessary-- no more snow days.
Yeah, those are going to last at -40F/-40C nights we often experience where I live. Nor do I see them being able to add any cool relief from their shade on a hot day.
That said, it is hard to grow healthy trees in the poisoned soils of a big city. They tend to struggle and be sickly when choked by concrete and asphalt.