I did my O-levels in '86 and some classes in some subjects took the 16+ which were a precursor to the GCSE.
The science KS3 SATs at the end of the 90s had a few multi choice questions (you wouldn't believe how hard it was to coach unconfident kids into just choosing one, even if they had gone blank) but mostly questions that you had to answer in sentences. The papers were tiered and to get level 5 or 6 you really had to be tackling the non-multiple choice questions. As with GCSE, there was a lot of exam technique involved. eg for a question awarding 2 points, 2 facts are needed.
And, of course, 3 points were awarded purely for the blessed spg.