I did double maths, physics and art for A Level, but based on your son's age it would have been twelve years earlier. We covered log tables. Even had books of them. And trig tables too. Calculators were acceptable for the maths exams at least and in fact I still have the calculator I used then, but at least at one point we were expected to be able to use books of tables. Could be that we had to use tables for straight maths and were allowed calculators for further maths. I really can't recall.

On the other side of the coin my son did double maths, physics and chemistry for A Level, finishing school last year, and his courses covered all sorts of stuff we never even discussed the existence of. Stuff like quantum physics, field theory or anything to do with cosmology wasn't even talked about back then. If someone had mentioned something like the Hertzsprung-Russell Diagram or Fermions and Bosons in our day the teachers would probably have gone into meltdown.

James