Prep League

The Prep League is a high school athletic league that is part of the CIF Southern Section.

Members

 * Chadwick School
 * Flintridge Preparatory School
 * Mayfield Senior School (girls school)
 * Polytechnic School (except football)
 * Providence High School
 * Rio Hondo Preparatory School (except football)
 * Westridge School (girls school)

Affiliate members

 * Maranatha High School (swimming and diving)
 * Sage Hill School (football)
 * Windward School (football)