Spotswood High School is a four-year comprehensive public high school, serving students in ninth through twelfth grade in Spotswood, in Middlesex County, in the U.S. state of New Jersey, operating as the lone secondary school of the Spotswood Public Schools.

As of the 2022–23 school year, the school had an enrollment of 745 students and 57.6 classroom teachers (on an FTE basis), for a student–teacher ratio of 12.9:1. There were 61 students (8.2% of enrollment) eligible for free lunch and 22 (3.0% of students) eligible for reduced-cost lunch.^[1]

Students from Helmetta, a non-operating district, attend school in Spotswood beginning in grammar school; students from Milltown attend the high school as part of a sending/receiving relationship with the Milltown Public Schools.^[3][4][5] As of 2021, Spotswood High School has had a postsecondary education rate of 33% for a four-year school, 33% for a two-year school, 7& for a business or technical school, and 27% into the workforce/other. Spotswood High School offers 14 Advanced Placement courses and 28 honors courses. Spotswood High School also offers the Seal of Biliteracy, certifying students in their proficiency in English and another language.^[6]

During the 1992-93 school year, Spotswood High School was awarded the Blue Ribbon School Award of Excellence by the United States Department of Education,^[7] the highest award an American school can receive.^[8][9]

The school was the 159th-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.^[10] The school had been ranked 102nd in the state of 328 schools in 2012, after being ranked 105th in 2010 out of 322 schools listed.^[11] The magazine ranked the school 126th in 2008 out of 316 schools.^[12] The school was ranked 183rd in the magazine's September 2006 issue, which surveyed 316 schools across the state.^[13]

Schooldigger.com ranked the school 80th out of 381 public high schools statewide in its 2011 rankings (a decrease of 17 positions from the 2010 ranking) which were based on the combined percentage of students classified as proficient or above proficient on the mathematics (89.8%) and language arts literacy (95.8%) components of the High School Proficiency Assessment (HSPA).^[14]

The Spotswood High School Chargers^[2] compete in the Blue Division of the Greater Middlesex Conference, which comprises public and private high schools in the Middlesex County area and operates under the auspices of the New Jersey State Interscholastic Athletic Association.^[15] With 509 students in grades 10-12, the school was classified by the NJSIAA for the 2019–20 school year as Group II for most athletic competition purposes, which included schools with an enrollment of 486 to 758 students in that grade range.^[16] The football team competes in Division 2B of the Big Central Football Conference, which includes 60 public and private high schools in Hunterdon, Middlesex, Somerset, Union and Warren counties, which are broken down into 10 divisions by size and location.^[17] The school was classified by the NJSIAA as Group II South for football for 2022–2024, which included schools with 480 to 674 students.^[18]

The school participates together with South River High School in a joint ice hockey team in which East Brunswick High School is the host school / lead agency. The co-op program operates under agreements scheduled to expire at the end of the 2023–24 school year.^[19]

The principal is Amy Jablonski. Her administration team includes the assistant principal.^[6]

• Michael "Jersey" Moriarty (class of 2004), bassist for the band Hey Monday.^[30]
• Geno Zimmerlink (born 1963), former American football tight end who played for the Atlanta Falcons of the National Football League.^[31]