On the somewhat related topic of science, and standardized testing, at the end of last year (9th grade), my older son took the state standardized testing in science (biology). Kids have to get a certain score in that test in order to eventually graduate. They can take it multiple years to get a "passing score," if needed. 9th grade is the first testing year. Scale is 440-560. Passing is a lowly 470. 470 places you on the border of "Not Meeting Expectations" and "Partially Meeting Expectations" (other categories are "Meeting Expectations" and "Exceeding Expectations").
He earned a 560 ... so "perfect," though he got one question wrong. After congratulating him, I kiddingly said "hey, you missed one ... what the heck happened?" His response was "I'm not good at biology." Dude, if you're not good at biology and you scored a perfect scaled score, these other kids must be drooling on the test. And we're in MA, with the most educated populace and the best educational system (arguably).