My A500 only ever had KS1.2, so that's as far as I got before building a 486 machine from salvaged parts in the summer of 1998. By October of the same year I was sick of that POS and Windows 95, so I gave it to my sister-in-law and bought an iMac, which served me well for a couple of years.
In high school, however, I had access to a couple of machine running Workbench 2.X and a Video Toaster.