Deerfield competes in the Central Suburban League and in Illinois High School Association tournaments.

DHS has also won awards for its theater, student newspaper, congressional debate, television, and scholastic bowl programs.

In addition, the Auditorium houses a walk-draw white cyclorama, movable tormentors, four travelers, dead-hung teasers and a walk draw black scrim.

The Studio Theatre has a reconfigurable walk-draw curtain system with a dedicated inventory of black stage draperies and a sky blue cyclorama.

The school sponsors interscholastic sports teams for men and women in basketball, bowling, cross country, golf, gymnastics, soccer, swimming and diving, tennis, track & field, volleyball, and water polo.

Deerfield also sponsors a joint fencing team with Highland Park High School for men and women.

In the 2007–2008 season, the Warriors defeated New Trier High School to win the State title in the White Division by a score of 3–1.

[25] Also, the school has a television station called DHS-TV that comes out with bi-weekly, and sometimes weekly 12-minute news shows during the homeroom period.

[26] The Scholastic Bowl team qualified for the Class AA IHSA State Championship in 2004 and 2005 by winning its regional and sectional tournaments.

[21] In 2018, Deerfield High School student Natalie Doppelt won the IHSMTA for Best Actress for her role in the DHS production of Sister Act.

In 2019, Deerfield High School’s production of Crazy for You brought in 5 nominations and 2 wins at the IHSMTA, DHS' theatre director Susan Gorman won the award for Best Direction and DHS student Jacob Simon won the award for Best Actor.