Marin Day School - Mill Valley Preschool
Marin Day School - Mill Valley Preschool is a licensed child care center in Mill Valley, CA, licensed for up to 60 children and serving preschool-age children. It has held its California license since 2003. Since February 2021, state licensing staff have inspected it 4 times and investigated 1 complaint, 1 of them substantiated. The state issued 3 citations, 0 of them Type A (the most serious), most often for records & paperwork (1 of 3). 2 citations came in the last 12 months. Measured by weighted citations per inspection, it is tied for #14 of 17 centers in Mill Valley and has more citations per inspection than 57% of California licensed centers.
Inspection record
Every state visit
What inspectors cited most
Citations, newest first
Based on observation, interview, the licensee did not comply with the section cited above where the children enrolled under this facility are present and comingling with another licensed preschool facility (213005254) which poses/posed a potential health, safety or personal rights risk to persons in care.
Based on LPA staff interviews, the children napping in the Panda classroom were left unsupervised when the door closed in between Panda and Seals classroom. This poses a potential health and safety risk to children in care.
Based on interviews and record reviews, the licensee did not isolate the child immediately while they were ill, which poses a potential health and safety risk to persons in care.
Complaint investigations
- Staff allowed child with high fever to stay in the classroom with other children
- Staff allow children with a fever to return without a 24 hour fever free period
How often are complaints about daycares in California substantiated? See the county-by-county report →
About this center
Common questions
Does Marin Day School - Mill Valley Preschool take infants?
Not under this license, which covers preschool-age children.
Has Marin Day School - Mill Valley Preschool had any serious violations?
No Type A citations since 2021. It has 3 Type B citations, listed above.
Have there been complaints about Marin Day School - Mill Valley Preschool?
California investigated 1 complaint since 2021 and substantiated 1. Allegations are shown only for substantiated complaints.
How does Marin Day School - Mill Valley Preschool compare with other daycares in Mill Valley?
It is tied for #14 of 17 centers in Mill Valley by weighted citations per inspection, and has more citations per inspection than 57% of California licensed centers with enough inspection history to compare.
When was Marin Day School - Mill Valley Preschool last inspected?
Sep 17, 2026. The state issued at least one citation during that visit.
How much does Marin Day School - Mill Valley Preschool cost?
California does not publish individual centers’ prices, so ask Marin Day School - Mill Valley Preschool for its current tuition. For comparison, the median full-time price at licensed centers in Marin County, which includes Mill Valley, was $1,683 a month for preschoolers (about $2,120 today) in the state’s 2021 Regional Market Rate Survey.
Who runs Marin Day School - Mill Valley Preschool?
The licensee is Bright Horizons Children's Centers, LLC, and the administrator listed with the state is Ashley Jones.
Licensed centers nearby
322 Throckmorton, Mill Valley · under 0.1 mi away · 21 spotsNo citationsOld Firehouse School Mill Valley-preschool
10 Olive Street, Mill Valley · under 0.1 mi away · 40 spotsNo citationsMarin Day Schools - Old Mills Campus
352 Throckmorton Ave, Mill Valley · under 0.1 mi away · 20 spotsNo citationsMarin Horizon School- Toddler Bldg.
247 Miller Avenue, Mill Valley · 0.7 mi away · 18 spotsAbout typicalGuidepost Montessori At Mill Valley
270 Miller Ave, Mill Valley · 0.8 mi away · 25 spotsAbout typicalGuidepost Montessori At Mill Valley (Inf)
270 Miller Ave, Mill Valley · 0.8 mi away · 21 spotsMore citations than most
Citations are quoted from California Department of Social Services inspection and complaint reports. Type A citations are the state’s most serious category (an immediate risk to children’s health, safety or personal rights); Type B citations are a potential risk. A citation is a finding about one rule, not a judgment about a center overall. Complaint allegations appear here only when the state substantiated them.
To read the full state reports, search facility number 213005253 on the California Care Facility Search. Data refreshed Oct 3, 2026.
Comparing centers? See how to choose a daycare: 30 questions to ask and a printable checklist.