[5] The 60 acres (24 ha) of land on which the high school sits was donated by George Ludlow Lee Sr., who was the owner and chairman of the board of Red Devil, Inc.

[6] Stephen Kovacs was appointed the Ridge High School head boys’ fencing coach in November 2019, for a salary of $8,542.

[9] A number of fencers on the school team attended the nearby Kaprica Fencing Academy, which Kovacs owned and where he was head coach.

[10] Kovacs was arrested in 2021 by detectives for allegedly sexually assaulting two teenage fencing students multiple times in 2020 and 2021; he died in Somerset County Jail in January 2022.

[27] The school was ranked 140th in the nation and eighth in New Jersey on the list of "America's Best High Schools 2012" prepared by The Daily Beast / Newsweek, with rankings based primarily on graduation rate, matriculation rate for college and number of Advanced Placement / International Baccalaureate courses taken per student, with lesser factors based on average scores on the SAT / ACT, average AP/IB scores and the number of AP/IB courses available to students.

[37] Interscholastic sports offered at Ridge include volleyball, baseball, ice hockey, football, fencing, basketball, cross country, soccer, gymnastics, cheerleading, field hockey, golf, lacrosse, ski racing, softball, swimming, tennis, track and field, winter track, marching band, Special Olympics Unified Sports and wrestling.

[40] The 2000 team finished the season with a record of 27-5 after winning the Group II state title with a 4-1 victory against Mendham in the championship game.

[46] The girls tennis team won the Group II state championship in 1984 (defeating runner-up Millburn High School in the tournament's final round) and 2016 (vs. Bergen Tech).

[55] A scoreless tie after double overtime with Freehold Township gave the 2015 team a share of the Group IV title and a 23-0-1 record for the season.

[56][57] The 2017 team finished the season with a 18-4-2 record and was co-champion with Freehold Township High School after the Group IV title game ended in a scoreless tie after regulation and two overtime periods.

[58] The girls' field hockey team won the North II Group III state sectional championship in 2005.

[70] The Ridge girls' volleyball team won the Group IV state championship in 2017, defeating Cherokee High School.

[71] The coach of the boys fencing team, Stephen Kovacs, was arrested in October 2021 on charges of sexual assault.

[74] In 2023, the boys' tennis team won the Group IV state championship, the program's first, with a 4-1 victory in the finals against Cherry Hill High School East.

The marching band won its first NJ state championship in Group IIIA in 2015 with their program "Ridge in the City.

In 2012, despite being ranked 2nd going into National Championships, the band was unable to compete due to the damage in Basking Ridge from Hurricane Sandy.

[80] The band has enjoyed many successes over recent years, most notably placing 1st in the USBands Yamaha Cup at MetLife Stadium in 2021 where they also swept all the caption awards.