Early discussions for forming a district date back to 1949, when representatives from Bellmawr,
Mount Ephraim, Runnemede and Gloucester Township met to discuss projections for enrollment three years down the road. Students from Bellmawr had been attending
Haddon Heights High School, those from Runnemede were at
Audubon High School and students from Gloucester Township was sending to
Haddonfield Memorial High School. By June 1955, both
Audubon Park and Mount Ephraim had dropped consideration of joining the regional district. The remaining districts had been told by their host high schools that Bellmawr students could no longer be accepted at Haddon Heights High School or those from Runnemede at Audubon High School, while Gloucester Township had been forced to send ninth graders to
Paulsboro High School, as they could not be accommodated at Haddonfield Memorial High School. Voters approved spending $2.3 million (equivalent to $ million in ) for construction of Triton Regional High School, the district's first facility. The school opened in September 1957 with a total of 980 students. Ground was broken in June 1966 for construction for Highland Regional High School, the district's second school facility, which would have a capacity of 1,200 students and be built at a cost of $2.7 million (equivalent to $ million in ) on a site . The school opened in 1967, allowing split sessions at Triton High School to end. With enrollment at the two existing high schools rising from 2,800 in 1990 to almost 3,500 in 2000, the district planned a third facility. With construction underway in February 2000, Timber Creek High School was constructed on a site at a cost of $41.2 million (equivalent to $ million in ). The school opened in September 2001 with 850 students, with 1,200 students expected the following school year. ==Schools==