| Charleroi High School | |
| Streetaddress: | 100 Fecsen Drive |
| City: | Charleroi |
| State: | Pennsylvania |
| County: | Washington |
| Zipcode: | 15022 |
| Country: | United States |
| Schoolboard: | President: Mr. Ken Wiltz |
| District: | Charleroi Area School District |
| Superintendent: | Ed Zelich |
| Principal: | Patti Mason |
| Teaching Staff: | 34.50 (FTE) |
| Ratio: | 12.78 |
| Type: | Public |
| Grades: | 9-12 |
| Rival: | Monessen High School |
| Mascot: | Cougars |
| Colors: | RED\BLACK |
| Alumni: | Christopher Thropp (1982-1986) Fullback #40 on 1986 Penn State National Championship Team |
| Enrollment: | 441 (2018-19)[1] |
| Homepage: | https://www.charleroisd.org/3/home |
Charleroi High School is a public high school located in Charleroi, Pennsylvania, USA. The High School is operated by the Charleroi School District. It was built in 1965, and at the time was noted for being one of the few high schools in Pennsylvania to have a Planetarium. It was renovated in 1999-2001