The entire chemistry department at my high school was running on Mac Classics until this year. One classroom got PC's a couple of months ago, but the other still has macs (lemme tell you... they've spent 3 or 4 times as much time in tech support for the windows machines in the last 3 months as they spent on the Macs for their whole lives... and guess which computers STILL work better, easier, and give more accurate results?).
Oh, and the physics lab is still on Mac Classics (Heck, if it ain't broke, don't fix it... or replace it... even if they've been there sine back in '89).
But hey, I guess it's not an even match... the Mac's are running at sub-50 Mhz speeds with 4MB RAM and <100MB hard drives while the PC's are over 1Ghz with 64 MB RAM and 5 (or so) gig harddrives. Give them another decade or so and the PCs might have an advantage... =)
Oh, and I was lucky enough to snag an old Classic in hopes of making an aquarium out of it.
In PC Hell (at school).
-JoeCrow