USC Athletics abides by the National Collegiate Athletic Association policies and rules compliance. As a result, the NCAA policy for transgender student-athletes, as of September 13, 2011, states the following.

A new policy will allow transgender student-athletes to participate in sex-separated sports activities so long as the athlete’s use of hormone therapy is consistent with the NCAA policies and current medical standards, which state:

• A trans male (female to male) student-athlete who has received a medical exception for treatment with testosterone for gender transition may compete on a men’s team but is no longer eligible to compete on a women’s team without changing the team status to a mixed team. A mixed team is eligible only for men’s championships.
• A trans female (male to female) student-athlete being treated with testosterone suppression medication for gender transition may continue to compete on a men’s team but may not compete on a women’s team without changing it to a mixed team status until completing one calendar year of documented testosterone-suppression treatment.

Complete press release. NCAA Transgender Handbook.