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Preschools/CA/San Francisco/Wonder Years School
Preschool / Day Care Center

Wonder Years School

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

380 21st Avenue, San Francisco, CA 94121

Visit website ↗(415) 209-5488Directions ↗Licensed for 45
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Licensing & safety record

✓ Clean licensing record

No citations or complaint visits on file with state licensing as of 2025-09-29. Last licensing visit: 5/21/2025 (2 total).

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

About this preschool

Wonder Years School offers preschool and daycare programs for infants, toddlers, and preschoolers in San Francisco, emphasizing hands-on exploration and meaningful relationships. The school uses an eclectic approach incorporating Reggio Emilia, Montessori, and play-based learning philosophies.

Philosophy
An eclectic approach incorporating elements of Reggio Emilia, Montessori, and play-based learning. The school focuses on holistic child development through an emergent curriculum designed based on children's interests, developmental levels, and unique needs, promoting exploration, creativity, and a love of learning.
Ages served
3 months to 5 years (Infant Program: 3-12 months; Toddler Program: 1-2 years; Preschool Program: 2-5 years)
Hours
Full Time: 8:30 AM - 3:00 PM; Extended Full Time: 8:00 AM - 5:30 PM; Part time and Half time programs available
Outdoor
Massive outdoor playground in the backyard

Programs

  • •Infant Program (3 months - 12 months)
  • •Toddler Program (1 year - 2 years)
  • •Preschool Program (2 years - 5 years)
  • •12 month, 10 month, and Summer Program options

Highlights

  • ✓STEAM-focused, play-based learning
  • ✓Small classes with low teacher-to-child ratios (1:3 infants, 1:4 toddlers, 1:8 preschool)
  • ✓Primary caregiving approach for infants
  • ✓Newly renovated, bright, immaculate facility

Not stated on their website: Tuition, Meals/snacks, Drop-in care availability, Curriculum details, Special needs support. 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.

Parent reviews

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Helpful guides for parents

What age does preschool start?Typical ages, readiness signs, and state cutoffs.Is my child ready for preschool?The readiness signs to look for.Preschool vs. daycareHow they differ and which fits your child.Preschool vs. pre-KWhat comes when, from ages 3 to 5.

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.