They had a classroom filled with TRS-80's in my highschool, later to be replaced by klonky Philips XT's, the science department was smart enough to buy a c64 with an interface that could turn it into an oscillator. What was pretty normal at the time was that the interface and c64 was there - but not the programming to turn the c64 into a measuring device using the interface.
That's when 14 year old highschool students come in pretty handy - I ended up partly programming the interface and turning the c64 into some sort of oscillator/measuring device.
Mac's were not to be found in my highschool. Nor at the university. Everything was VAX, Unix, Alpha or PC.

Editor / Pixelator - Armchair Arcade, Inc.