He is also the national coach of the USA International Math Olympiad Team, where he led the U.S. team to first place after a 21-year gap. Po-Shen Loh is the founder of expii.com, a free interactive website focusing on math and science in order to help students succeed. He has been recognized with several different awards, including an NSF CAREER award and the Morgan Prize Honorable Mention Award. He earned his undergraduate degree in Mathematics from Caltech, where he graduated first in his class. He earned his MA in mathematics from the University of Cambridge and his PhD in Combinatorics of the Pure Math Department at Princeton University.