[1] Designed to accommodate a maximum enrollment of 1,350, the facility is located in Scotch Plains and opened for 1,080 students in September 1957 after delays due to a series of strikes.

[20] The school is host to an annually published literary magazine, Muse, which features poetry, stories and art by the students.

Scotch Plains-Fanwood is also home to the Repertory Theatre program, which in the past few years has put on such shows as Footloose, Les Misérables, West Side Story, 42nd Street, Once Upon a Mattress, Urinetown, Guys and Dolls, Curtains, Hairspray, and The Mystery of Edwin Drood garnering a number of Rising Star Award nominations from the Paper Mill Playhouse, including one win for Outstanding Student Orchestra, for 42nd Street in 2006.

It was formed in 1942 to play contemporary big-band songs during lunch periods and at the high school's senior prom.

When not competing, the Moonglowers play old time big band swing songs for various community events and organizations.

From community concerts to retirement homes, the Moonglowers play songs from the golden age of jazz for those who remember them.

They ended the competitive marching band season ranked 2nd place, with a score of 95.8 in group 6A, with a caption award of Best Effect.

[24][25] The Scotch Plains-Fanwood High School Raiders[2] compete in the Union County Interscholastic Athletic Conference, which is comprised of public and private high schools in the county and was established following a reorganization of sports leagues in Northern New Jersey by the New Jersey State Interscholastic Athletic Association (NJSIAA).

[33] The 1977 boys' baseball team finished the season with a record of 29–3 after winning the Group IV state championship by defeating Piscataway High School by a score of 1–0 in the final game of the tournament.

[38] The football team won the North II Group III state championship in 1990 with a 25–12 win against West Morris Central High School in the tournament final, after coming back from a 12–0 deficit early in the first half.

[41] The Lady Raider Swimmers defeated Princeton High School 100–70 to win the 2015 Group B State championship.

The boys' basketball team won the Group III state championship in 2008, defeating Timber Creek Regional High School in the tournament final.

[52] In 2022, the boys volleyball program won the North II sectional championship over Union High School.

[53] In 2023, the team won the North Group III Sectional championship with a victory over Hackensack High School[54] and capped off the season with a Group III state championship victory over Colts Neck High School to finish the year with a record of 31–1.

In September 2017, the school came under controversy when students raised concerns through a petition on change.org regarding the use of the former logo at sporting events by spectators in a fan group called Raider Nation.

A counter petition was also created, stating that the school should return to using its original logo with a Native American head.