Students in ninth through twelfth grades attend Mainland Regional High School, which serves students from Linwood, Northfield and Somers Point. The high school is located in Linwood. For the 1997–98 school year, Mainland Regional High School was recognized by the United States Department of Education as a National Blue Ribbon School. As of the 2018–19 school year, the high school had an enrollment of 1,226 students and 112.0 classroom teachers (on an FTE basis), for a student–teacher ratio of 10.9:1. Seats on the high school district's nine-member board of education are allocated based on population, with three seats assigned to Northfield.