So Big Co-Op Preschool

So Big Co-Op Preschool offers a play-based preschool program that uses a developmentally appropriate curriculum. The program operates as a parent cooperative preschool, with parents involved both in the classroom and in all administrative functions of the school. The preschool program is offered in the mornings only.

• Ages: 3–5 years old
• Schedule: Morning preschool classes with 2-day (Tuesday/Thursday), 3-day (Monday/Wednesday/Friday), and 5-day (Monday–Friday) options

So Big Co-Op Preschool was founded in 1955 and operates as a non-profit, non-sectarian school with approximately 48 member families. The school is run by an all volunteer board of directors under the guidance of a paid teacher/director, and the adult to student ratio is 1:4. The program operates on a traditional school year and is closed during the summer, with separate Summer Park Days offered, with dates, time, and location listed on the school’s website. The mission of So Big Co-op Preschool states that it is dedicated to providing a warm and nurturing environment, with a play-based program that encourages each child to question, wonder, and explore the environment in order to foster a lifelong love of learning, and that parent involvement at every level supports a sense of community and parent-to-parent support. The school is licensed by the State of California and is a member of the California Council of Parent Participation Nursery Schools (CCPPNS).

Last updated June 19, 2026.