Northfield Mount Hermon School, often abbreviated as NMH, is a co-educational college-preparatory school for boarding and day students in grades 9–12, along with a post-graduate year. Located in Gill, Massachusetts, it is a member of the Eight Schools Association and Six Schools League.

Tuition, room, and board: $72,647. Additional fees: $6,944 (includes the cost of maintenance of student’s Form I-20 and SEVIS records and other services for international students with F-1 status). Textbooks and other required supplies (typically average $600 per year).