Ivy Preparatory School League
The Ivy Preparatory School League is a high school athletic conference of university-preparatory schools in New York City and its suburbs. The Ivy Preparatory School League has no affiliation with the Ivy League universities.
The league comprises the following schools:
- Collegiate School in Manhattan
- Dalton School in Manhattan
- Fieldston School in Riverdale, Bronx
- Hackley School in Tarrytown, Westchester County
- Horace Mann School in Riverdale, Bronx
- Poly Prep in Brooklyn, New York
- Riverdale Country School in Riverdale, Bronx
- Trinity School in Manhattan
- Adelphi School in Brooklyn
- New York Military Academy in Cornwall, Orange County
- St. Paul's School in Garden City, Nassau County, now closed
- The Stony Brook School in Brookhaven, Suffolk County
The league offers competition in the following sports:
- Cross Country (Boys)
- Cross Country (Girls)
- Field Hockey (Girls)
- Soccer (Boys)
- Soccer (Girls)
- Tennis (Girls)
- Volleyball (Girls)
- Basketball (Boys)
- Basketball (Girls)
- Indoor Track (Boys)
- Indoor Track (Girls)
- Swimming (Boys)
- Swimming (Girls)
- Wrestling (Boys)
- Baseball (Boys)
- Lacrosse (Boys)
- Lacrosse (Girls)
- Outdoor Track (Boys)
- Outdoor Track (Girls)
- Softball (Girls)
- Tennis (Boys)
Not all member schools compete in all sports. Collegiate School is an all-boys school.
Notable athlete alumni
High school graduation year is in parentheses.
- Ian McGinnis (1997), basketball, NCAA-leading rebounder at Dartmouth
- Cormac Ryan (2018), (left school in 10th grade) Devision 1 basketball player at Stanford. 
- Pedro Álvarez (2005), baseball, Pittsburgh Pirates
- Harrison Bader (2012), baseball, St. Louis Cardinals
- Kimberly Belton (1976), basketball, member of the Stanford Athletic Hall of Fame and 1980 draft choice of the Phoenix Suns
- Bethany Donaphin (1998), basketball, Stanford and New York Liberty
- Joakim Noah (2004, from Lawrenceville School), basketball, New York Knicks
- Brian Flores (1999), football, Boston College, assistant coach for New England Patriots
- "Ivy Prep League Athletics". sites.google.com.
- "A LOOK AT THE LOCALS / McGinnis Tops in Rebounding".
- "BGSN/ian mcginnis profile". www.dartmouth.edu.
- "at p.27. Retrieved December 28, 2015" (PDF).
- "2019 Mens Basketball Roster". Stanford Mens basketball. Retrieved 19 November 2018.
- "Danya Abrams Selected As ACC Basketball Legend - Boston College". Bceagles.com. 2009-02-19. Retrieved 2018-09-21.
- https://www.nytimes.com/2008/06/01/sports/baseball/01alvarez.html retrieved December 28, 2015.
- "News". www.horacemann.org.
- "The Stanford Daily 16 April 1976 — The Stanford Daily". stanforddailyarchive.com.
- "Player Bio: Bethany Donaphin".
- https://www.nytimes.com/2014/04/25/sports/basketball/bulls-star-with-brooklyn-roots-is-the-same-as-ever-different.html?_r=0 Retrieved December 28, 2015.
- "Brian Flores is the New England Patriots' next coaching star to emerge from Bill Belichick's tree". Espn.com. 2018-03-07. Retrieved 2018-09-21.
- "Calvin Hill '65 Tells Students His Most Valued Lessons From Riverdale". www.riverdale.edu.
- https://www.nytimes.com/1981/04/27/nyregion/notes-on-people-mcenroe-s-trinity-legacy.html Retrieved December 28, 2015.
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