The Prep League is a high school athletic league that is part of the CIF Southern Section.^[1]

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)