Apple IIgs for sure. It had the color, the much larger software base as well expansion possibilities, even back in the day, getting IIgs specific cards/software would mean ordering them abroad, as IIgs was not even sold in Finland. In same catelogory the Amiga 1000/500 had that market seqment owned quite nicely. I can't remember what the schools had generally but ours had atleast some CP/M machines and i'd assume some basic model PC's.

Amiga models kicked those PC's h a r d with the specs and the price.