In the 2015-16 school year, the Lower School (grades 2-8 in Mountain Lakes) had 109 students and the High School (grades 9-12 in Boonton) had 28 students. As of the 2017–18 school year, the school had an enrollment of 122 students and 26.8 classroom teachers (on an FTE basis), for a student–teacher ratio of 4.6:1. The school's student body was 79.5% (97) White, 9.0% (11) Hispanic, 5.7% (7) Black and 5.7% (7) Asian. The Lower School director is Janet Cozine, the High School director is Dr. Eric Caparulo, and Dr. Kara A. Loftin is the Head of School.