Old Mill High School is a public high school in Millersville, Maryland, United States, 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. It was built with no walls or ceilings in some classrooms, but later had walls installed. Old Mill High School is located in a suburb of Baltimore.
Along with Annapolis High School and Meade Senior High School, Old Mill Senior High is one of the three IB World Schools in AACPS.
The school mascot is the Patriot.
In 2024, the school split, with half of its population going to Severn Run High School.
The school building also houses Old Mill Middle School North, which is part of the Severn Run Cluster.
The Old Mill feeder area includes the southern half of Glen Burnie, and its cluster school is Old Mill Middle South. Old Mill Middle North is now zoned to Severn Run High School due to overpopulation
Old Mill High School is one of the most racially and socio-economically diverse high schools in Anne Arundel County, and the third most diverse public high school in Anne Arundel County. As of the 2023âÂÂ2024 school year, the racial composition of the 2,445 Old Mill High School students was 33.62% White, 35.58% African American, 18.81% Hispanic, 4.74% Asian, and 6.34% two or more races. Further, 48.1% of students qualified for free and reduced price meals. The Old Mill cluster is bordered by the Severn cluster to the West, the Severna Park cluster to the south, Chesapeake to the east, and Glen Burnie to the north and east.
Old Mill High School is a public magnet school. It has 2,445 students in grades 9âÂÂ12, with a student-teacher ratio of 17 to 1. According to state test scores, 54% of students are at least proficient in math and 23% in reading.
After 2014, Old Mill High test scores dropped from an average 70.1% to 48.6%. As of 2024, the test score average wassits at 39.7%.
Old Mill ranks 90th out of 146 schools in Maryland on School Digger.
Old Mill High School has been an IB World School since April 2005. It offers the IB Diploma Programme, preceded by the Extended Learning Program (ELP), more commonly known as Pre-IB. The school offers a variety of standard level (SL) and higher level (HL) courses.
Students at Old Mill Senior High School are encouraged to participate in extracurricular, community, social and professional development organizations including: