Downers Grove South High School, or DGS, and locally referred to as "South", is a public four-year high school located at the corner of Dunham Road and 63rd Street in Downers Grove, Illinois, a western suburb of Chicago, Illinois, in the United States.

It has since undergone significant renovations to bring it up to date, including a $49.5 million voter referendum for the district in 2001.

[11] On Friday, June 22, 2011 at around 8:30 pm, South High School received extensive damage to its outdoor sports areas during a two-minute EF1 tornado: fences around the tennis courts were flattened, portable toilets and rows of bleachers were flipped upside-down as well as some fallen branches across the school's football/soccer field.

[14] This was designed as both a trial run of this schedule type, and as a use for the various common spaces located around the school that were built during the MFP.

The school sponsors interscholastic teams for young men and women in: basketball, cross country, golf, gymnastics, soccer, swimming & diving, tennis, fishing, track & field, Ultimate frisbee, and volleyball.

[16] The following teams have won in their respective IHSA sponsored state tournament or meet:[17] Downers Grove South has won several state championship for its extracurricular activities in its history, including (as of 2008[update]) three in performance in the round, two in chess, and three from the Fillies Pom and Dance Team.