[10] The site of the west Arrandale building is now a parking lot for Great Neck House.

After World War II ended, the school district's student population grew quickly.

The Polo Road building was expanded in 1947, in general accordance with its architect's original plan.

[citation needed] The student population shrank after the Baby Boom generation graduated in the 1970s, and grade 9 was moved back to the high school building.

[citation needed] As of 1988, Great Neck North has an "open campus" policy.

Rona Telsey, a spokesperson for the district, said in 1988 that "open campus" had not been a controversy for the school.

[6] Since 1971, Great Neck North has been home to the Community School alternative program, a humanities-centered school-within-a-school that focuses on seminar-style learning.