There are thirty-two elementary schools in Harford County. Homestead-Wakefield, William Paca/Old Post Road and Youth's Benefit Elementary schools are two-building campuses housing primary students (Kindergarten-2nd Grade) in one building and intermediate students (3rd Grade-5th Grade) in the other building.

There are currently 8 middle schools in Harford County:

There are currently ten high schools in Harford County, including one technical high school. There is also a charter school located next to Aberdeen High School.

Three HCPS high schools also have or are preparing for magnet programs. Although the Science and Mathematics Academy is a separate institution, it is hosted by and shares some facilities with Aberdeen High School, and Harford Technical High School is in itself a magnet school for academic and technical programs. Edgewood High School is in the beginning stages of the International Baccalaureate Diploma Programme, in which the school will offer college-preparatory courses for its students, who will graduate with an internationally recognized high school diploma. Edgewood also offers the Academy of Finance program.

The school mascots are the Aberdeen Eagles, Bel Air Bobcats, C. Milton Wright Mustangs, Edgewood Rams, Fallston Cougars, Havre de Grace Warriors, Joppatowne Mariners, North Harford Hawks, Patterson Mill Huskies, Restoration Academy Lions and Harford Technical Cobras.

The images below outline the elementary and middle schools that feed students into each high school. Harford Technical is fed by students from each school, as entry is by application. The feeder system is not all-inclusive, due to magnet programs at Aberdeen, Edgewood, and Joppatowne.

Aberdeen

Bel Air

C. Milton Wright

Edgewood