Hartshorne-Hypatia Prize Examination

Has anyone taken this exam? It says high school level math, but what kind? I can’t seem to find any more information about it anywhere.

http://dug.math.brown.edu/math-at-brown/hartshorne-hypatia-prize-exam

High school level, non calculus math says algebra, geometry, and trigonometry to me. That’s basically SAT level math now, right?