Lenape Valley Regional High School is a four-year comprehensive public high school and school district in serving students in ninth through twelfth grades from two municipalities in Sussex County and one in Morris County, New Jersey, United States. The communities served by the high school are Byram Township and Stanhope Borough in Sussex County and Netcong Borough in Morris County. The school is located in Stanhope. As of the 2021–22 school year, the school had an enrollment of 657 students and 54.1 classroom teachers (on an FTE basis), for a student–teacher ratio of 12.1:1. There were 45 students (6.8% of enrollment) eligible for free lunch and 13 (2.0% of students) eligible for reduced-cost lunch. The district is classified by the New Jersey Department of Education as being in District Factor Group "GH", the third-highest of eight groupings. District Factor Groups organize districts statewide to allow comparison by common socioeconomic characteristics of the local districts. From lowest socioeconomic status to highest, the categories are A, B, CD, DE, FG, GH, I and J. Lenape Valley had been the only high school in Sussex County with a planetarium. In February 2016, the board of education voted to eliminate the planetarium and use the space for science labs. History Netcong High School closed in 1974 and Lenape Valley began serving students from Netcong and those from Byram Township and Stanhope, who had previously attended Sparta High School. The school opened in September 1974 with an enrollment of 737 students. Awards, recognition and rankings The school was the 180th-ranked public high school in New Jersey out of 339 schools statewide in New Jersey Monthly magazine's September 2014 cover story on the state's "Top Public High Schools", using a new ranking methodology. The school had been ranked 120th in the state of 328 schools in 2012, after being ranked 108th in 2010 out of 322 schools listed. The magazine ranked the school 105th out of 316 schools statewide in its September 2008 cover story. The school was ranked 139th in the magazine's September 2006 issue, which surveyed 316 schools across the state. Schooldigger.com ranked the school tied for 145th out of 381 public high schools statewide in its 2011 rankings (an increase of 2 positions from the 2010 ranking) which were based on the combined percentage of students classified as proficient or above proficient on the mathematics (82.9%) and language arts literacy (95.1%) components of