Glen Dale's John Marshall High School is a Public School Serving students in Grades 09-12.
97.15% of students at this school are White, non-Hispanic
| Grades Offered | Grades 09-12 |
| Total Students | 1158 |
| Student:Teacher ratio | 13:1 |
| Gender % | 48.88 % Male / 51.12 % Female |
| Total Classroom Teachers | 92.15 |
| Student Population at John Marshall High School by Grade | |
| Magnet School | |
| Charter School | |
| Shared School | |
| Title 1 Eligible | |