Marietta High School (MHS) is a six-year, public, secondary school in Marietta, Ohio, United States. The school serves students in the Marietta City School District in grades seven through twelve. As of 2023âÂÂ2024, the enrollment is 1,028 students. Marietta's mascot is Tabby the tiger and its colors are orange and black. The school participates in both the Tri-Valley Conference (Ohio).
MHS is accredited by the North Central Association of Colleges and Secondary Schools and the Ohio Department of Education.
An altered sign at the school was shown on The Ellen DeGeneres Show in the segment "What's Wrong With These Signs?"