Northern Valley Regional High School at Demarest
The school is one of two high schools that are part of the Northern Valley Regional High School District , the other being Northern Valley Regional High School at Old Tappan , which serves students Harrington Park , Northvale , Norwood and Old Tappan , along with students from Rockleigh , who attend as part of a sending/receiving relationship . 
<triplet> Northern Valley Regional High School at Old Tappan <subj> Northern Valley Regional High School District <obj> school district