Interstate Athletic Conference

The Interstate Athletic Conference is an all-boys high school sports league made up of six private high schools in the Washington, D.C., area, competing in twelve varsity sports: baseball, basketball, cross country, football, golf, ice hockey, lacrosse, soccer, swimming and diving, tennis, track and field, and wrestling. The IAC is widely regarded as one of the most competitive and talent-deep lacrosse leagues in the nation. Some schools in the IAC are co-ed, so they do not have as many boys to participate in athletics as some schools in the MAC and WCAC. For example, Gonzaga College High School (WCAC), has over 900 boys enrolled at the school while Episcopal High School (IAC) only has 435 boys and girls combined. Despite this, the IAC is seen as on par with or surpassing the WCAC and the MAC and more competitive than the PVAC, the other private high school sports conferences in the Washington, D.C. area. The IAC is also known for its academics as it boasts 3 of the most elite boarding schools in the country.

Each year, the conference awards the Founder's Cup to the school that is most successful across all sports.

Members

School	Location	Established	Enrollment	Team name	Joined
Bullis School	Potomac, Maryland	1930	745	Bulldogs	-
Episcopal High School	Alexandria, Virginia	1839	435	Maroon	-
Georgetown Preparatory School	North Bethesda, Maryland	1789	490	Hoyas	-
Landon School	Bethesda, Maryland	1929	670	Bears	-
St. Albans School	Washington, D.C.	1909	575	Bulldogs	-
St. Stephen's & St. Agnes School	Alexandria, Virginia	1924	450	Saints	-

Past members

School	Location	Colors	Established	Enrollment	Team name	Joined	Left
Sidwell Friends School	Washington, D.C.		1883	1,150	Quakers	-	1999
Saint James School	St. James, Maryland		1842	235	Saints	-	1974

History

The IAC was founded in 1938 as the Academic Athletic Association and later named Interstate Academic Conference before becoming the Interstate Athletic Association.

1970: Georgetown Prep's football team is banned from the league. This ban lasts 11 years.
1990: Sidwell Friends withdraws from league play in football.
2004: League Headmasters meet and decide to remove Georgetown Prep's football team, citing the school's larger number of male students and higher football aspirations than the league's other schools. Prep returned to the IAC for football in 2014.