Author: Sean Alexander

Sean Alexander holds a B.S. in Physics from UC Santa Barbara and an M.S. in Physics from San Francisco State University. He has taught math, physics and astronomy at every level since 2004 — from advanced physics at Stanford to a high school serving students with severe learning differences, including ADHD, dyscalculia and autism. He founded Alexander Tutoring in 2009 to reveal the deep connections between math and nature to as many students as possible.
An image of a young girl studying for the PSAT.
Math Physics Resources
Sean Alexander

PSAT vs SAT

High school students take a handful of different tests on the way to a college application. Two of them come

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