Makes sense, guessing not many high schools even had one computer until the Apple II, which I guess would have been a bit after you graduated.
Side note, I love that it's possible to take a course like that online for ~free now.
I did take a FORTRAN course in college which people would consider very rudimentary today. This was the textbook :-) https://openlibrary.org/works/OL6795090W/A_Fortran_coloring_...
But I didn't really use a computer to speak of (other than as a text editor in grad school) until I was working--and later got into programming as a hobby.