I haven't seen this mentioned here, and it may only apply in higher grades, but DD sometimes gets reading comp questions wrong because she overthinks (classic gifted kid stuff). I keep reminding her that she needs to look at it from the angle of "What do they WANT me to put?", and "What is the simplest right answer?", etc, not "What other answer might possibly be correct if I looked at it from all angles, microanalyzed the meaning of the word 'is', and used my knowledge of speciation?"