The campus, which was renovated in 1995, features five buildings connected by covered walkways.
Included in the facilities are:
- forty-five classrooms
- two daycare rooms
- Lower School science lab
- Upper School labs for chemistry, biology, physical science, and Middle School science
- state of the art Lower and Upper School art rooms
- Lower and Upper School computer labs
- two gymnasiums
- a classroom for music and band
- a classroom for chorus
- a cafetorium
In 2002, the Dove Center was completed. It houses the Upper School English department, a computer lab, a computer classroom, art room, yearbook room, and the library.
The school maintains a lower school playground with a gazebo and outdoor basketball area. The separate preschool playground was renovated in 2005.
HA has two gyms, a practice football field, and a practice baseball field. In 2013, the Student Activity Center was built to provide a comprehensive weightlifting, fitness, and conditioning facility for students, faculty, and alumni.