Montclair High School is a comprehensive four-year public high school located in Montclair, New Jersey, United States, as part of the Montclair Public Schools. The school serves residents from all neighborhoods in the Township of Montclair, including those living in the Upper Montclair section of town.

As of the 2005-06 school year, the school had an enrollment of 1,958 students and 156.5 classroom teachers (on an FTE basis), for a student-teacher ratio of 12.5. detail.asp?Search=1&DistrictID=3410560&ID=341056002166" target="_blank">Montclair High School, _National Center for Education Statistics. Accessed January 21, 2008.