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Preschools/CA/El Cerrito/Keystone Montessori School
Preschool / Day Care Center

Keystone Montessori School

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Montessori
Ages
Ages 2–5
Teacher ratio
1:12 (CA min)

6639 Blake Street, El Cerrito, CA 94530

Visit website ↗(510) 709-5853Directions ↗Licensed for 57
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Licensing & safety record

Citations on file
5
Complaint visits
8
Last visit
7/25/2025
Total visits
16

Citations are part of routine licensing oversight and range from minor (Type B) to serious (Type A). A citation alone doesn't mean a program is unsafe — read the full reports for context.

Source: California Dept. of Social Services, Community Care Licensing (updated 2025-09-29). View official inspection reports →

About this preschool

Keystone Montessori School serves children ages 18 months to 6 years using the Montessori approach with individualized learning and whole child education. The school maintains stimulating environments designed to help children develop capabilities at their own pace.

Philosophy
Montessori approach emphasizing individualized learning tailored to each child's readiness, whole child education including social, emotional, and physical development, freedom to move and choose activities to foster independence and self-confidence, and development of accountability within structured environments.
Ages served
18 months to 6 years

Programs

  • •Toddler (18-36 months)
  • •Pre-Primary (2.5-3.5 years)
  • •Primary (3-6 years)

Highlights

  • ✓Montessori-certified teachers with intensive training in child development and Montessori philosophy
  • ✓Three-year classroom cycles allowing teachers to know children and families well
  • ✓Thoughtfully designed classrooms with carefully prepared learning environments
  • ✓Individualized lessons given when children are ready to learn

Not stated on their website: Hours, Tuition, Teacher ratio, Outdoor activities, Meals provided, Schedule details. Ask the preschool directly.

Summarized by AI from the preschool's own website (Jun 23, 2026). Not written or verified by PreschoolWise — confirm details directly with the program.

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Helpful guides for parents

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Listing facts from public CA child-care licensing records. Reviews are the opinions of individual contributors, moderated before publishing; they are not endorsements by PreschoolWise. Always visit and verify a program directly before enrolling.