With over 5,279 students, Elizabeth High School had been the largest high school in the nation in terms of student population. Prior to 2010, Elizabeth High School occupied eight campuses, also known as "houses": The William F. Halsey house, the John E. Dwyer house, the Thomas Jefferson house, the Thomas Edison house, the Sam E. Aboff house, the Alexander Hamilton academy, the Upper academy, and the Lower academy. In 2009, the Elizabeth Board of Education passed the "Transformation Plan", which split-up the houses that made up Elizabeth High School and made each house its own high school. The Upper and Lower academies became the new Elizabeth High School.