In addition to housing the district administrative offices, Harrison School is the home of the pre-kindergarten and preschool disabled programs and LLD-Harrison Classroom.

The Pre-K program is administered through the office of Continuing Education and is a tuition-based program. The Pre-School Disabled Program is administered through the Office of Special Education for students who are special education classified.
Designed to meet the educational development of the child, the primary belief of the program is that each child has specific and individual needs that will be addressed through a developmentally appropriate curriculum. These practices are based upon principles that serve to enhance the development of the whole child.   In the pre-K environment, the child's learning is guided through the use of hands-on activities both planned and spontaneous to actively engage them individually and with small-group instruction.