| Caston Junior-Senior High School | |
| Location: | 987 West 750 South |
| City: | Fulton |
| State: | Indiana |
| County: | Fulton County |
| Zipcode: | 46931 |
| Country: | US |
| Coordinates: | 40.9478°N -86.2592°W |
| Type: | Public high school |
| Grades: | 7-12 |
| Principal: | Chuck Evans |
| Enrollment: | 444 (2022–23)[1] |
| Ratio: | 15.86 |
| Faculty: | 28.00 (FTE) |
| Team Name: | Comets |
| Conference: | Hoosier North Athletic Conference |
| Website: | Official Website |
Caston Junior-Senior High School is a middle school and high school located in Fulton, Indiana. It is part of Caston School Corp[2] which also includes Caston Elementary School.[3] The two share a single campus and main building.