[17] The school was ranked 207th in the nation and 17th 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.

[18] In 2013, a Mountain Lakes High School quiz bowl team won the Tri-State and New Jersey championships of MSG Varsity's TV show, The Challenge.

[29] The 1962 team finished the season with a 25–0 record after taking the Group I title with an 88–66 win against Dunellen in the tournament finals played in front of some 3,500 at Delaware Valley Garden.

[31] In 2006, the girls' basketball team won North I, Group I state sectional title, edging Pascack Hills High School 43–42 in the tournament final.

[35] The girls' tennis team won the Group I state title in 1999 (vs. Rumson-Fair Haven Regional High School in the tournament finals) and 2018 (vs.

[36] The 1999 team won the Group I title at Mercer County Park, defeating Pitman High School 41⁄2-1⁄2 in the semifinals and then knocking off Rumson-Fair Haven 5-0 in the championships.

[44] In 2008, the football team won the North I Group I state championship vs. Glen Rock High School at Giants Stadium on December 5, 2008, by a score of 35–21 and finished with an overall record of 12–0.

The team won the Tournament of Champions in 2007, 2008 and 2019 (defeating Delbarton all three seasons) and in 2022 (vs. Rumson-Fair Haven Regional High School); the four ToC titles are the second most in the state.

[49] The 2007 boys lacrosse team won the NJSIAA Group I state championship with an 8–6 win over Madison High School.

[51] The 2019 team won the Group I state title with an 8–7 win against previously undefeated Manasquan in a game that was suspended in the middle of the second quarter due to a lightning storm and was completed two days later, and went on to win the Tournament of Champions with a 7–6 victory in triple overtime against Summit in the semifinals and a 12–5 defeat of Delbarton in the finals at Kean University to finish the season with a 19–2 record.

[56] The 2007 girls lacrosse team won the North, Group I state sectional title, edging Chatham High School 14–13 in the tournament final.

[58] The boys' swimming team won the 2007 North II – B state sectional championship with a 112–58 win over Chatham High School.

[59] The team moved on to win the 2007 Group B state championship, edging Haddonfield Memorial High School 86–84.