Northern Highlands Regional High School (NHRHS) is a regional public high school and school district in Allendale, Bergen County, New Jersey, United States. The school serves students in ninth through twelfth grades from Allendale, Ho-Ho-Kus, Saddle River, and Upper Saddle River. Students from Saddle River have the option of attending either Northern Highlands or Ramsey High School, as part of sending/receiving relationships with the two districts. Northern Highlands Regional High School is accredited by the New Jersey Department of Education.