Computer class in high school in 1981 was a math elective taught by the calculus teacher, but it wasn't a taught class. It was free study and the grade was pass/no pass. Pass just meant you could show the teacher a program you had worked on in class. The computers were all Commodore PETs. I don't remember anyone doing anything too amazing. There was no after hours access and nobody I knew had a PET at home. My group of friends had VIC-20, Atari, TRS-80, and APPLE-II at home.