I had a teacher who would give two points for each correct answer out of, say, 47 questions. So the highest score you could get was 94%. This was for a math test.

Awful teacher even if they had questions no one would know, cause maybe they had a prodigy in their class or maybe someone that studied that subject to death, that's a horrible outcome for the kid who got all questions correct.

I guess you could go Farnsworth route and say penmanship counts. (Futurama joke). Though at a certain age range that's not really applicable I guess it depends the grade level for my annoyance at that teacher I'll probably forget it in a moment anyways. Still awful teacher if they got all questions correct, and wasn't a trick one in there.

Edit forgot to add also if the work showed all steps of logic (usually math but sure you get what I mean). No one learning should be denied a perfect score if they learned it is all.