For an educational tool the point award system is flawed and doesn't make mathematical sense. Get all of the question right get 80 point miss one get 50 never able to get 100 and missing 1 out of 8 isn't 50 if the possible is only 80 it's 70 if it's 100 (seems that isn't technically even possible) then missing 1 question would be 88.5 points. None of this makes any sense.