As of the 2017–18 school year, the school had an enrollment of 302 students (plus 4 in PreK) and 43.3 classroom teachers (on an FTE basis), for a student–teacher ratio of 7:1. The school's student body was 78.1% (236) White, 13.9% (42) Asian, 3.6% (11) Black, 3.6% (11) Hispanic and 0.7% (2) two or more races.[3]
The Lower School offers foreign language instruction starting in Kindergarten, which continues as a requirement through 12th grade. The Upper School offers Advanced Placement exams in the following areas: English, United States History, European History, French Literature and/or Language, Latin, Spanish Literature and/or Language, Calculus AB and BC, Biology, Physics, and Chemistry.
Saddle River Day School also offers anyone in the 9th-12th grades participation in the yearly French Exchange Program. This program includes a two-week homestay in alternate years in Dijon, France.
The Saddle River Day School Rebels[4] participate in the North Jersey Interscholastic Conference, which comprises small-enrollment schools in Bergen, Hudson, Morris and Passaic counties, and was created following a reorganization of sports leagues in Northern New Jersey by the New Jersey State Interscholastic Athletic Association (NJSIAA).[10][11][12] Previously, the school was a member of the all-private Patriot Conference, but after a decision by the NJSIAA in February 2008, both Hawthorne Christian Academy and Saddle River Day School joined the Olympic Division of the Bergen County Scholastic League (BCSL) later that year, and remained in the conference until it was disbanded as part of the NJSIAA's 2010 realignment.[13][14] The BCSL was disbanded as a part of a wide-ranging realignment of high school sports in northern New Jersey, and Saddle River Day moved to the new NJIC in the fall of 2010. With 133 students in grades 10-12, the school was classified by the NJSIAA for the 2019–20 school year as Non-Public B for most athletic competition purposes, which included schools with an enrollment of 37 to 366 students in that grade range (equivalent to Group II for public schools).[15]
The girls basketball team won the Non-Public Group B state title in 2018 (defeating Rutgers Preparatory School in the tournament final) and 2019 (vs. Trenton Catholic Academy), and was declared as the Non-Public North B sectional champion in 2020 after finals were cancelled due to COVID-19.[16] The team won their first title with a 73-49 win against Rutgers Prep in the finals of the Non-Public B tournament final.[17] The 2019 team repeated as winner of the Non-Public B title against Trenton Catholic by a score of 79-67 in the title game.[18] The teams advanced to the Tournament of Champions both seasons. In 2018, the team was the fifth seed, winning the quarterfinals by 92-63 against fourth-seeded University High School before losing to number-one seed Manasquan High School 80-67 in the semifinal game played at the RWJBarnabas Health Arena to finish at 24-7 for the season.[19] The 2019 team was the second seed and won the semifinal round by a score of 76-63 against number-three seed Manchester Township High School before losing in the finals to top seed Franklin High School by a score of 65-57 and finishing the season at 28-3.[20][21]
^Mattura, Greg. "Small-school NJIC may debut its own league championship", The Record, January 9, 2017. Accessed August 30, 2020. "The small-school North Jersey Interscholastic Conference may debut its own boys basketball tournament this season, one season after introducing its girls hoops championship. The NJIC is comprised of schools from Bergen, Passaic and Hudson counties and the event offered to the 36 boys teams would serve as an alternative to likely competing against larger programs in a county tournament."
^Copper, Darren. "Girls basketball: Saddle River Day rips Rutgers Prep to earn first title; IHA's run ends", The Record, March 10, 2018. Accessed October 27, 2020. "The Rebels gave New Jersey a good shake at the Barnabas Center racing past Rutgers Prep 73-49 to claim their first Non-Public B girls basketball state title Saturday. Saddle River Day advances to the six-team Tournament of Champions, which opens Wednesday."
^"No. 3 Saddle River Day girls basketball does it again, wins Non-Public B title", NJ Advance Media for NJ.com, March 9, 2019, updated August 22, 2019. Accessed October 27, 2020. "That score ended a Trenton Catholic run and put away any doubt in the Non-Public B final. It was all a part of a 30-point night for Sidor as she led Saddle River Day, No. 3 in the NJ.com Top 20, to a 79-67 win over No. 6 Trenton Catholic and jumped into second place all-time for career points in state history."
^Lerner, Gregg. "Good as Advertised; Masonius Fuels Manasquan Into ToC Final", Shore Sports Network, March 16, 2018. Accessed February 8, 2021. "She penned the latest chapter Friday night with a dominating performance that covered practically every shred of lumber on the court at RWJBarnabas Health Arena, collecting 26 points and 20 rebounds to complement her overall composure in powering top-seeded Manasquan to an 80-67 triumph over fifth-seeded Saddle River Day in the semifinal round of the NJSIAA Tournament of Champions."
^Salemi, Vicki. "Glorifying JerseyA noted Hollywood screenwriter uses her Jersey roots to help inform her storytelling.", New Jersey Monthly, December 13, 2010. Accessed July 25, 2011. ""It's definitely part of who I am," says the Los Angeles-based scribe, who was born in France and moved with her family to Fort Lee when she was 6 months old. The family later moved to Demarest and then Montvale, where she lived from age seven until college. Brosh McKenna, now 43, attended Saddle River Day School, studied literature at Harvard and, after graduation, co-wrote A Co-Ed's Companion with her college roommate."
^"Never Enough". www.scribd.com. Retrieved January 27, 2020.
^Feuer, Alan. "A Teenager's Last Steps on a Trail of Missed Chances", The New York Times, July 29, 2006. Accessed October 20, 2007. "Even the settings seemed cruelly accidental: She began the evening in safety and affluence in Harrington Park, N.J.... She was co-captain of the team at Saddle River Day School in Saddle River, N.J., where the honors English class has been asked to read Pygmalion this summer and earlier this year two students picked up silver medals in the National Latin Exam."
