Thomas Kelly College Preparatory High School is a public 4–year high school located in the Brighton Park neighborhood on the southwest side of Chicago, Illinois, United States. The school is named for Irish nationalist Thomas J. Kelly. Kelly is the third largest Chicago public high school in terms of student population. Over 80% of students are Hispanic. The school's team name is Trojans. Opened in 1928, Kelly is a part of the Chicago Public Schools district.