They were asked to perform throughout the community in the late 1990s and continued to pursue music despite the school's inability to provide them with an adequate instructor.

The Cedar Grove High School Panthers[2] compete in the Super Essex Conference which is comprised of public and private high schools covering Essex County and operates under the jurisdiction of the New Jersey State Interscholastic Athletic Association (NJSIAA).

[20] The 1974 baseball team finished the season with a record of 17-5-2 after winning the Group I state championship by defeating Gloucester City High School by a score of 5-4 in the final of the tournament.

[21][22] In 2003, the baseball team took the North II, Group I state title with a 10–7 win over New Providence High School in the tournament's final game.

[27] The 2006 softball team returned as sectional champion, edging Wallington High School 5–4 in the tournament final.

[35] The football team won the 2004 North II Group I state sectional championship with head coach Ed Sadloch by defeating Hoboken High School by a score of 6–0 in the tournament final.

[36] In 2007, the team defeated Belvidere High School 17–0 to win the North II, Group I state sectional championship in a game played at Rutgers Stadium.

[37][38] In 2009, the football team beat Secaucus High School by a score of 30–14 at Giants Stadium to win the North II Group I state sectional title for the fourth time in the decade.

[39] The team won their seventh playoff-era sectional title in 2011 with a 34-21 win against Weequahic High School in the championship game.

[42] In 2007, Cedar Grove sophomore Matthew Giacobbe won the state sectional championship in the 3200m run in North I Group I.

[43] The boys' basketball team won the 2008 North I, Group I state sectional title with a 43–34 win over Verona High School.

[45] In 2009, Cedar Grove senior Nick Miller won the Group I state championship in golf and placed top 5 in the Tournament of Champions.