Varsity
The Arlington Stallions compete in Division 1AA of Rugby Illinois. The varsity team is largely comprised of upperclassmen, although underclassmen may play on varsity. Varsity players usually play one or two preseason friendlies and a six-game regular season, followed by the state playoffs. The Rugby Illinois state championship game usually takes place around the end of May and beginning of June.
Varsity indoor training begins in early January at the Mount Prospect RecPlex. Outdoor practice begins in early March at Olympic Park in Schaumburg and then Klem Park in Arlington Heights.
The regular season begins the first week of April.
Frosh/Soph
The Arlington Stallions also field a team in the Frosh/Soph (U16) division of Rugby Illinois, which is comprised of freshmen and sophomores. The frosh/soph team typically plays a schedule similar to that of the varsity.
The frosh/soph team practices with the varsity.
Middle school
There are two middle school teams: Juniors (U13) and Seniors (U15). Juniors are 5th and 6th graders, while 7th and 8th graders play on the senior side. Middle school matches are held on Sundays. There are usually five regular-season games along with one or two preseason friendlies.
Middle schoolers train at the same location as the varsity.
Girls may play middle school rugby with the Arlington Stallions.
Sevens
The Arlington Stallions play in the Rugby Illinois Olympic (Sevens) Rugby series each summer. Sevens tournaments take place on Saturdays in June and July, with the state finals in mid-July.
Arlington Stallions are five-time Rugby Illinois Olympic Rugby champions, having won titles in 2013, 2014, 2015, 2017, and 2018.
Fall ball
Arlington also competes in Rugby Illinois Fall Ball. Fall Ball is open to all high school students, with training beginning after Labor Day. There are typically five to six Fall Ball matches, with no playoffs or championships, as Fall Ball is intended to give players who are not involved in fall sports an opportunity to play rugby.