Hannah Caldwell Elementary School is located on a hilltop setting at 1120 Commerce Avenue in Union, New Jersey. It has an enrollment of 580 children in Grades Pre-Kindergarten to Four. The school serves a diverse population that reflects the community.

The mission of Hannah Caldwell is to provide a safe, well-organized, child-centered environment, which establishes an atmosphere conducive to mutual respect, integrity, and shared values. These values encourage each child to reach his/her social, physical, and academic potential. When the resources of students, staff, and community are combined, children will develop life skills needed to become productive adults and life-long learners.