Mendham Music Instruction Instrumental 65 E Main St West Morris Mendham High School (WMMHS) is located in Mendham, NJ, and is part of the West Morris Regional High School District. The school serves students living in Chester Borough, Chester Township, Mendham Borough, and Mendham Township, NJ. Mendham NJ Music Instruction Instrumental Mendham High School www.wmmhs.org Business Reviews Mendham High School Testimonials