High School Data Transparency Act of 2013 - Amends the Elementary and Secondary Education Act of 1965 (ESEA) to direct coeducational elementary and secondary schools that participate in any ESEA program to: (1) report annually certain information on equality in their school athletic programs to the Commissioner for Educational Statistics; and (2) make such information available, upon request, to their students, potential students, and the public.
Directs the Commissioner to ensure that such data are posted on the Department of Education's Web site within a reasonable period of time.