Great thread!
My mom was a teacher when I was in elementary school and was allowed to bring home a computer during the summer, an Apple IIc. I still remember playing Lode Runner, Marble Madness and G.I. Joe on that thing -- good times.
When I was a freshman in high school, our computer lab sported 386SX-33's. I can still see the LED displays on those boxes that would clock down to 16 when you hit the Turbo button. I remember one computer was a 386DX-40. It was so much better for gaming! One of them had a CD-ROM drive, I think is was a 1x drive, that was extremely slow.
Then the lab moved to a new location on campus. Ours was a rather cash-strapped private school that depended mostly on donations to get new equipment. Sometimes when a family would get a new computer, they'd donate the old one to our school. We also got a lot of surplus machines from the local military base. As a result, my later years in high school we had an incredibly eclectic array of computers, everything from IBM XT's and AT's to the aforementioned 386's, various 486 clones of all shapes and sizes, some Cyrix MII's, AMD 586 and a couple K6-2's, some Pentium Overdrives and regular Pentiums 75 through 120, some being generic machines, and some HP Vectras, Microns and Dells. At times, all these would be in service simultaneously (except the XT's and AT's, they got phased out pretty quick when the Pentiums came along)! Then the base surplused a bunch of Pentium II-233MMX's, and it felt like we were in high cotton. This setup was a computer lover's dream -- I got permission to keep all the Fraken-puters running, as they were all donations and in various stages of functionality, swapping out parts and repairing them as needed. We even had an old, gigantic (I think it was 54-port!) 10-base-T hub that I scored off of EBay (old EBay back in the day) that we used to network them all together in a basic file/print sharing Win95 LAN (only the teacher's computer had internet back then, and that came right before I left).
Our tiny school had over 75 computers at one time, many of them parts boxes sitting in a back room behind the library. We had no IT department. It was the lab teacher, my friends and I who did all the work, and it was great fun.
Unfortunately, after we all left, the school modernized and hired a local company to provide them with PCs and computer services. All of that retro gold probably ended up in the dumpster. If only they had saved it!