It was occupied in 1975 and is administered by Anne Arundel County Public Schools (AACPS).

[5] Further, 48.1% of students qualified for free and reduced price meals.

According to state test scores, 54% of students are at least proficient in math and 23% in reading.

[7] It offers the IB Diploma Programme, preceded by the Extended Learning Program (ELP), or more commonly known as Pre-IB.

Students at Old Mill Senior High School are encouraged to participate in extracurricular, community, social and professional development organizations including: [9]