Daycare Record Child care inspection records

Diablo Valley Montessori School

3390 Deerhill Road, Lafayette, CA 94549 · Contra Costa County
Child care center (preschool)

Diablo Valley Montessori School is a licensed child care center in Lafayette, CA, licensed for up to 138 children and serving preschool-age children. It has held its California license since 1986. Since February 2021, state licensing staff have inspected it 4 times and investigated 2 complaints, 0 of them substantiated. The state issued 3 citations, 1 of them Type A (the most serious). None of them came in the last 12 months. Measured by weighted citations per inspection, it is #18 of 22 centers in Lafayette and has more citations per inspection than 68% of California licensed centers.

Inspection record

More citations than 68% of 10,948 California licensed centers, per inspection, weighted by severity. More citations than most
#18 of 22 centers in Lafayette
1 Type A citations
2 Type B citations
4 Inspections
0 of 2 Complaints substantiated
3 citations from 8 state visits since Feb 8, 2021 · 0 in the last 12 months · last inspected Oct 8, 2025

Every state visit

2022 2023 2024 2025 2026 INSPECTIONS (top) · REPORTS & INVESTIGATIONS (bottom) Oct 8, 2025 · Inspection · no citation May 14, 2025 · Report/investigation · citation found May 14, 2025 · Report/investigation · citation found Jul 12, 2024 · Inspection · no citation Sep 20, 2023 · Inspection · no citation Mar 24, 2023 · Report/investigation · no citation Dec 21, 2022 · Report/investigation · citation found Jun 10, 2022 · Inspection · no citation
Citation issued No citation Top row: inspections · bottom row: complaint investigations and other visits

What inspectors cited most

Caregiver conduct 1
Records & paperwork 1
Building & playground safety 1

Citations, newest first

Type A May 14, 2025 Case management visit (incident) Caregiver conduct
Personal rights §101223(a)(3)
Based on interviews and record review, the licensee did not comply with the section cited above in when C1 was pulling away from S1 his elbow was dislocated which poses/posed a immediate health, safety or personal rights risk to persons in care. 8 Failure to correct will result in a $100 per day civil penalty until corrected. Repeat violations are $250 per violation and $100 per day until corrected.
Plan of correction due May 15, 2025
Type B May 14, 2025 Complaint investigation Records & paperwork
Reporting requirements §101212(d)(1)(B)
Based on interview and record review the school was notified 2/12/25 that C1 recieved medical treatment but did not inform licensing until 2/18/25, which poses a potential health and safety risk to children in care. 8 Failure to correct will result in a $100 per day civil penalty until corrected. Repeat violations are $250 per violation and $100 per day until corrected.
Plan of correction due May 21, 2025
Type B Dec 21, 2022 Case management visit (other) Building & playground safety
Buildings and grounds §101238(a)
Based on Lead Testing Sample results the facility has one outdoor water fountain with lead exposure. Director stated children used it for drinking water until March 2020 and not been used since then. Since children were exposed to water with lead, this posed a potential risk to Health and Safety.
Plan of correction due Dec 21, 2022

Complaint investigations

Not substantiated May 14, 2025 Complaint investigation received May 8, 2025
The state did not substantiate this complaint, so its allegations are not shown.
1 citation issued during this investigation, listed under Citations.
Not substantiated Mar 24, 2023 Complaint investigation received Mar 21, 2023
The state did not substantiate this complaint, so its allegations are not shown.

How often are complaints about daycares in Contra Costa County substantiated? See the county-by-county report →

About this center

Licensed capacity 138 children
License type Child care center (preschool)
License status Licensed
Licensed since Jul 15, 1986
Licensee Diablo Valley Montessori School, INC.
Administrator Jayne Martin
Phone (925) 283-6036
State facility # 070208839
Parent reviews Google Maps reviews
Not checked by Daycare Record

Common questions

Does Diablo Valley Montessori School take infants?

Not under this license, which covers preschool-age children.

Has Diablo Valley Montessori School had any serious violations?

California issued 1 Type A citation since 2021, its most serious category. The most recent was on May 14, 2025, for personal rights. Each citation is listed in full above.

Have there been complaints about Diablo Valley Montessori School?

California investigated 2 complaints since 2021 and substantiated 0. Allegations are shown only for substantiated complaints.

How does Diablo Valley Montessori School compare with other daycares in Lafayette?

It is #18 of 22 centers in Lafayette by weighted citations per inspection, and has more citations per inspection than 68% of California licensed centers with enough inspection history to compare.

When was Diablo Valley Montessori School last inspected?

Oct 8, 2025. No citations were issued during that visit.

How much does Diablo Valley Montessori School cost?

California does not publish individual centers’ prices, so ask Diablo Valley Montessori School for its current tuition. For comparison, the median full-time price at licensed centers in Contra Costa County, which includes Lafayette, was $1,287 a month for preschoolers (about $1,620 today) in the state’s 2021 Regional Market Rate Survey.

Who runs Diablo Valley Montessori School?

The licensee is Diablo Valley Montessori School, INC., and the administrator listed with the state is Jayne Martin.

Licensed centers nearby

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 070208839 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.