Texas Schools
- Calhoun High School
- Callisburg High School
- Callisburg Independent School District
- Calvary Baptist Academy, New Braunfels, Texas
- Calvert High School
- Calvert Independent School District
- Cameron Independent School District
- Camp El Tesoro
- Campbell Independent School District
- Canadian Independent School District
- Caney Creek High School
- Canton High School
- Canton Independent School District
- Canutillo High School
- Canutillo Independent School District
- Canyon Creek Christian Academy
- Canyon High School
- Canyon High School
- Canyon Independent School District
- Canyon Lake High School
- Caprock High School
- Captain John L Chapin High School
- Career Point College
- Carl Wunsche Sr High School
- Carlisle Independent School District
- Carnegie Vanguard High School
- Carrizo Springs Consolidated Independent School District
- Carrizo Springs High School
- Carroll Independent School District
- Carroll Senior High School
- Carrollton Farmers Branch Independent School District
- Carthage High School
- Carthage Independent School District
- Carver Academy
- Carver High School
- Cassata High School
- Castleberry High School
- Castleberry Independent School District
- Cathedral High School
- Cayuga High School
- Cayuga Independent School District
- Cedar Brook Elementary
- Cedar Creek High School
- Cedar Hill Collegiate High School
- Cedar Hill High School
- Cedar Hill Independent School District
- Cedar Park High School
- Cedar Ridge High School
- Celeste High School
- Celeste Independent School District
- Celina High School
- Celina Independent School District
- Center High School
- Center Independent School District
- Center Point Independent School District
- Center For Advanced Legal Studies
- Center For Agile Technology
- Centerville Independent School District
- Centerville Independent School District
- Central Catholic Marianist High School
- Central College
- Central Heights High School
- Central Heights Independent School District
- Central High School
- Central High School
- Central High School
- Central Independent School District
- Central Nazarene College
- Central Texas Christian School
- Central Texas College
- Challenge Early College High School
- Channelview High School
- Channelview Independent School District
- Channing High School
- Channing Independent School District
- Chaparral Star Academy
- Chapel Hill High School
- Chapel Hill Independent School District
- Chapel Hill Independent School District
- Chappell Hill Female College
- Chappell Hill Public School And Chappell Hill Female College Bell
- Charles Middle School
- Charlotte High School
- Charlotte Independent School District
- Cherokee High School
- Cherokee Independent School District
- Cherry Spring School
- Chester Independent School District
- Chico Independent School District
- Childress Elementary School
- Childress High School
- Childress Independent School District
- Chillicothe High School
- Chillicothe Independent School District
- Chilton High School
- Chilton Independent School District
- China Spring High School
- China Spring Independent School District
- Chireno Independent School District
- Chisholm Trail Academy