To be honest it was so long ago I can't really remember too much. I recall trying to learn SQL and relational theory but just not getting it and thinking I would never use it anyway - how naive I was! That might have been A-Level.
They taught us BASIC, I can't remember the computers we had, I don't think they were popular ones. I do remember one of my colleagues really struggled with his practical project because he named all his variables a, aa, aaa, aaaa and so on. There was a maximum variable length of 8 characters so things went all wrong when he needed to use 9 variables. I don't think we were taught anything about quality software development, using decent variable names, algorithms etc..
Overall I did find the courses incredibly easy and I aced both without even trying. It was university where things started to get a bit more challenging.
I did science and maths as well, I did get much more out of those courses.