Yes - but "O level exams were based on only the top tier of kids taking it
it was designed such that only the people getting what would now be a* and A (or whatver the top grades are nowadays) would be taking it
the rest of the kids would be taking CSE
and this exam is for the lower level of CSE exams
and it shows the easier questions from the exam
On top of which the concept of replacing O levels and CSEs with GCSE was flawed and they had to reduce the levels a bit shortly after the change
and they were changed again a while ago
both times downwards but a bit
then they changed to to be numbers instead of letters and made it upside down ( high number better rather than A being the best and G being the worst)
so it is an invalid comparison
As I understood it, back in the 70's the brightest 15% of the population would gain a decent A Level pass (although I am not sure how 'decent' was defined) and the top 5% would eventually gain a degree of 2.2 or better.
This might be totally wrong, though.
Nowadays, the pass rate for degrees is astonishingly high; leading to the debate re are graduates really smarter now or have university course standards dropped?
Very low sample number but both of the offspring of one of my friends needed significant parental intervention to craft their dissertation, and various essays & assignments, along the way, as, to quote him "they were poorly structured and, in places, incomprehensible" before he rewrote them.
For balance, I do know two friends offspring (First; Law & Finance and First; Astrophysics, he us now a full professor) who are astonishingly articulate and clearly know their subject matter.