| Old Mill High School | |
|---|---|
| Location | |
 | |
600 Patriot Lane Millersville, Maryland United States | |
| Coordinates | 39°7′22″N 76°37′42″W / 39.12278°N 76.62833°W |
| Information | |
| Type | Public, Secondary |
| Established | 1975 |
| School district | Anne Arundel County Public Schools |
| Principal | Alison Mikeska[1] |
| Grades | 9-12 |
| Enrollment | 2,364 (2020-2021 school year)[2] |
| Campus type | Large suburb[3] |
| Color(s) | Red, White, and Blue |
| Mascot | Patriot |
| Website | AACPS website, School website |
Old Mill High School is a public high school in Millersville, Maryland, serving students in grades 9 through 12. It was occupied in 1975 and is administered by Anne Arundel County Public Schools (AACPS). The school was built to alleviate overcrowding at Arundel and Severna Park High Schools. The school has no walls or ceilings in some classrooms, only partitions to separate classrooms. Along with Annapolis High School and Meade Senior High School, Old Mill Senior High is one of the three IB World Schools in
Anne Arundel County. The school building also houses the high school's two feeder schools, Old Mill Middle School North and Old Mill Middle School South. The school mascot is, "The Patriots".