I scored a 36 (perfect) in science, and a 35 in math. I am not that smart.
If you take any test prep, it's not knowledge that they teach you. It's all test tendencies and what to look for in the questions.
It's like running the 40. Plenty of athletes are fast enough to run a 4.6 or better, but they dont know how. The start, which leg to lead with, running styles. They dont actually get faster but their testing number is higher. Same with ACT, you have to have some basis of knowledge, but the top end levels arent about knowing more, but knowing the test.
And just to show I am not bragging on the top my literature score was a 27, and my English was a 16. Grammar I am suck at.