I had a wonderful, pushy, ambitious (for her pupils) maths teacher, who should have been a uni. lecturer.
But I am incredibly grateful to her for bullying me relentlessly into doing my best.
The lady did not care that I ended up hating her at the time.
Thankfully, by the time I left, I
did understand why she had been so vile to me and I did thank her for it.

My Dad dealt with my scalings and polishings, Paul.

I've forgotten all the calculus I knew.

1974 was a while ago!