Originally Posted by Mk13
Getting 100% on everything might as well mean she's still bored and therefore only shows satisfactory effort at school. It's hard to show more enthusiasm when you're not motivated. So I am not really surprised she is getting an "S" in science.

That was my thought too at first. But then I would expect her to get "S" in all other subjects (except math, maybe, where she did get occasional 95-98%...) and she didn't... So I think it is more relates to teacher/school unspoken evaluation policies and has little to do with child's real assessment.