I went to a very ordinary Scottish comprehensive. It was chosen based on being up the road, and that was the end of the selection.
The teachers taught, they did not skim. We learned and passed exams, which involved memorising formulae etc (I did 3 separate sciences).
If we read a book in English, then step 1 was to read the book from cover to cover.
When i went onto university afterwards no one said that we weren't familiar with the basics.
Some things weren't as good. If I wanted a plan of Tutankhamen's tomb then I had to draw it myself, copying from the board, so its not as fast as wielding a pritt stick but on the other hand it helped remember it.
By the time, I'd been learning a language for 3 years, I could speak it and write it and I was very familiar with the various types of verbs -re, -ir, -er. My homework would be to memorise some more vocab or read a passage in French and answer the questions in French. My teachers always marked my work and gave some brief feedback.
Sorry, but it was just all round better in my normal 80s comprehensive than what my DC get today in their "outstanding" one, apart from corporal punishment which was still widely used at that time - usually a ruler than the belt but still...
I know England was different. The problems in English schools were making headlines even then. I remember one episode of BBC question time when they kept going on and on about something called a LEA.