[29] In 2008, the school was the national winner of the Euro Challenge, an economics competition sponsored by the European Delegation to the United States and the Moody's Foundation.
[41] The girls' swimming team won the 2002 Public Central B Sectionals, topping Red Bank Regional High School by 111–59.
[48] The 2007 team won the Central Jersey Group II sectional championship, defeating Somerville High School, 38–30 in the final game.
[49] The team then moved on the Group II championship, facing River Dell for the second consecutive year and winning by a score of 44–23,[50] before falling to Trenton Central High School, 48–37 in the first round of the Tournament of Champions.
[54] The team won the 2003 Central Jersey Group II championship, defeating Montgomery High School 3–2 in the final match.
[58] The team won the Central Jersey Group II title in 2002 over Burlington Township High School by a final score of 3–2.
[59] The 2007 team, seeded fourth, won the Central, Group II sectional title with a 1–0 overtime win (4–2 on penalty kicks) over second-seed Somerville High School in the tournament final.
[65] The 2013 football team finished with an 11–1 record and won the Central Jersey Group II state sectional championship over previously undefeated Weequahic High School by a 14–6 score.
[66] In 2014, Rumson-Fair Haven defeated Delaware Valley Regional High School by a score of 21–0 to claim their third title in five years.
[67] Rumson-Fair Haven won its third straight sectional championship in 2015, when it shut out Red Bank Regional High School 21–0 to win the Central Jersey Group III title.
[69] The team won the Central Jersey Group III sectional title with a 42–35 win against Somerville High School in the champion game[70] and won the Central / South Group III bowl game against Woodrow Wilson High School by a score of 26–18.
[84] The boys' swim team won its first state sectional title in 2015, winning all 11 events and beating top-seeded Lawrence High School 95–75 in the Central Jersey Public C finals.
[85] The boys' basketball team won the 2015 Shore Conference Tournament championship, defeating Christian Brothers Academy 50–24.
Tied 19–19 at halftime against top-seeded CBA, eleventh-seeded Rumson-Fair Haven exploded in the second half to outscore their opponent 31–5 and take home the title.
Brendan Barry scored 27 points in the contest, en route to winning Shore Conference Player of the Year.
[86] The girls lacrosse team won the Group II state championship in 2016 (defeating Bernards High School in the tournament finals) and 2021 (vs.
[87] The 2016 girls lacrosse team won the Group II title against Bernards High School, with a 14–11 victory in the tournament final at Kean University.
[90] On April 26, 2020, two RFH students, teamed up by live streaming and raising money for Jersey Shore University Medical Center while one student was running a marathon on his treadmill, which he completed at 5 hours 21 minutes and 35 seconds, his partner, as described by many media outlets, acted as the "hype man" and "entertainer" throughout the near six-hour live stream.
[91] The students decided to take the negative experience of the pandemic outbreak and make it into a positive with the live stream and as of April 30, 2020, the duo has raised over $6,000.
[92] Additionally, in April 2020 toward the beginning of the COVID-19 pandemic, ten Rumson Fair Haven students (juniors and seniors) began collecting food donations to help families in the Monmouth County area who had lost their jobs or had been unable to receive food due to the pandemic.