My elementary school had computers running Windows 95, Windows 3.1 and Mac OS 7. My third grade classroom had 6 Apple IIs and a PC running Windows 3.1. My last year there the school purchased a bunch of red iMac G3s (fluorescent colored, famous hockey puck mouse) for the main office.
My school was in Fremont, CA, just outside of Silicon Valley and received lots of technology grants. This probably explains the early adoption and strange mix of computers.
The first PC in my house was a gateway 2000 running Windows 95.