The Southwest Preparatory Conference (SPC) is an athletic conference for large, elite private high schools in Texas. It is composed of the following schools:
| Institution | Location | Year Founded | Population | Type | Nickname | Colors | Former TAPPS Member? | |
|---|---|---|---|---|---|---|---|---|
| Awty International School | Houston, Texas | 1956 | 1,754 (2022) | Coed(Nonsectarian) | Rams | Green, Gold | Yes | |
| Cistercian Preparatory School | Irving, Texas | 1962 | 355(2020) | Boys(Catholic) | Hawks | Black, White | Yes | |
| Duchesne Academy of the Sacred Heart | Houston, Texas | 1960 | 750(2022) | Girls(Catholic) | Chargers | Navy, Light Blue | Yes | |
| Episcopal High School | Bellaire, Texas | 1983 | 797(2020) | Coed(Episcopal) | Knights | Blue, White | Yes | |
| Episcopal School of Dallas | Dallas, Texas | 1974 | 1,170+ | Coed(Episcopal) | Eagles | Blue, White | Yes[1] | |
| Fort Worth Country Day School | Fort Worth, Texas | 1963 | 1,116 | Coed(Nonsectarian) | Falcons | Red, Blue | Yes | |
| Greenhill School | Addison, Texas | 1950 | 1,279 | Coed(Nonsectarian) | Hornets | Green, Gold | No | |
| Hockaday School | Dallas, Texas | 1913 | 1,113[2] | Girls(Nonsectarian) | Daisies | Green, White | No | |
| Houston Christian High School | Houston, Texas | 1998 | 470(2021) | Coed(Christian) | Mustangs | Blue, White | Yes | |
| The John Cooper School | The Woodlands, Texas | 1988 | 1,365 | Coed(Nonsectarian) | Dragons | Green, Black | Yes | |
| The Kinkaid School | Piney Point Village, Texas | 1906 | 1,375 (2015) | Coed(Nonsectarian) | Falcons | Purple, Gold | Yes[3] | |
| The Oakridge School | Arlington, Texas | 1979 | 800(2017) | Coed(Nonsectarian) | Owls | Green, Navy | Yes[4] | |
| St. Andrew's Episcopal School | Austin, Texas | 1952 | 941 | Coed(Episcopal) | Highlanders | Blue, Black, White | No | |
| St. John's School | Houston, Texas | 1946 | 1,493 | Coed(Nonsectarian) | Mavericks | Red, Black | No | |
| St. Mark's School of Texas | Dallas, Texas | 1906 | 911 | Boys(Episcopal) | Lions | Blue, Gold | No | |
| St. Stephen's Episcopal School | Austin, Texas | 1950 | 694 | Coed(Episcopal) | Spartans | Purple, Red | No | |
| Trinity Valley School | Fort Worth, Texas | 1959 | 1,017(2020) | Coed(Nonsectarian) | Trojans | Blue, White | No |
| Institution | Location | Year Founded | Population | Type | Nickname | Colors | Left SPC | Current Conference | |
|---|---|---|---|---|---|---|---|---|---|
| All Saints' Episcopal School | Fort Worth, Texas | 1951 | 1,264[5] | Coed(Episcopal) | Saints | Navy, White | 2018[6] | TAPPS | |
| Allen Academy[7] | Bryan, Texas | 1886 | 340 | Coed(Nonsectarian) | Rams | Blue, Gold | 1970s | TAPPS | |
| Casady School | Oklahoma City, Oklahoma | 1947 | 1,020 | Coed(Episcopal) | Cyclones | Navy Blue, White | 2024[8] | OSSAA | |
| Holland Hall | Tulsa, Oklahoma | 1922 | 1,034 | Coed(Episcopal) | Dutch | Red, Black, White | 2016[9] | OSSAA | |
| Lutheran High School | Houston, Texas | 1949 | 960 | Coed(Lutheran) | Pioneers | Green, Silver | 1970s | TAPPS | |
| Saint Mary's Hall | San Antonio, Texas | 1879 | 790 | Coed(Christian) | Barons | Purple, White | 2016 | TAPPS | |
| Texas Military Institute | San Antonio, Texas | 1893 | 552 | Coed(Episcopal) | Panthers | Black, Gold | 1970s | TAPPS | |
| Wichita Collegiate School | Wichita, Kansas | 1963 | 966 | Coed(Nonsectarian) | Spartans | Royal Blue, Gold | N/A | AVCTL |