Thornridge High School
| Thornridge High School | |
|---|---|
| Address | |
15000 Cottage Grove Avenue South Suburbs , , 60419 | |
| Coordinates | 41°37′08″N 87°36′00″W / 41.6189°N 87.6001°W |
| Information | |
| School type | Public |
| Opened | 1960 |
| School district | District 205 |
| Superintendent | Dr. Nathaniel Cunningham, Jr. |
| Dean | Christy Lewis Erica McGhee Mark Morgan |
| Principal | Justin Moore |
| Assistant Principal | Carol Friedl |
| Teaching staff | 72.00 (FTE) |
| Grades | 9–12 |
| Gender | Coed |
| Enrollment | 978 (2023-2024) |
| Average class size | 21.5 |
| Student to teacher ratio | 14.68 |
| Campus type | Suburban |
| Color(s) | Columbia Blue Navy Blue |
| Slogan | "We are TR" |
| Athletics conference | Southland Athletic Conference |
| Mascot | Wing Ding the Mighty Falcon |
| Rival | Thornton Thornwood |
| Newspaper | Bagpipe |
| Yearbook | Piper |
| Communities served | Dolton, Harvey, South Holland, Phoenix, Burnham, Calumet City, and Markham |
| Feeder schools | George S. Patton School Washington Jr. High School Lincoln Jr. High School Roosevelt Jr. High School Dirksen Middle School |
| Website | www |
Thornridge High School is a public four-year high school located in Dolton, Illinois, a suburb about 20 miles south of Chicago. The school is part of Thornton Township High School District 205. Thornridge High School first opened to the public in 1960 after completing construction of the current building. It serves the cities/villages of Dolton, Harvey, South Holland, Phoenix, Burnham, Calumet City, and Markham.