During this summer camp, a 3-day exam (the TSTST) is given to determine the approximately 18 individuals who will form the TSTST group. These individuals take a series of contests throughout the year, such as the Asian Pacific Mathematics Olympiad, to finally pick the 6 member US Mathematics Team that will represent the US at the International Math Olympiad. The current head coach of the US IMO team is Po-Shen Loh from Carnegie Mellon University