McAdams Hall was named after Mr. Robert McAdams who had been the ENCSD’s superintendent since 1963. By 1967, the student population had grown so rapidly that the ENCSD requested money from the General Assembly for the construction of another new building. This new building would house an additional 120 students and come equipped with classrooms, dormitories, a library, a gymnasium, an auditorium, and an indoor pool.  Construction was complete and the building was fully occupied in 1970. McAdams Hall is currently being used for high school classes, housing for boarding students, and activities in the gymnasium.  

In 2005, the gymnasium in McAdams Hall was named Williamson Gym in honor of Mr. James “Barney” Williamson, Jr. Mr. Williamson was a beloved teacher and coach at the ENCSD from 1970-1999.