St. Mary's Montessori School · Preschool, Rancho Cucamonga
St. Mary's Montessori School is a licensed child care center in Rancho Cucamonga, CA, licensed for up to 209 children and serving preschool-age children. It has held its California license since 2013. Since February 2021, state licensing staff have inspected it 5 times and investigated 4 complaints, 1 of them substantiated. The state issued 11 citations, 6 of them Type A (the most serious), most often for supervision (6 of 11). None of them came in the last 12 months. Measured by weighted citations per inspection, it is tied for #33 of 35 centers in Rancho Cucamonga and has more citations per inspection than 94% of California licensed centers.
Inspection record
Every state visit
What inspectors cited most
Citations, newest first
Based on record review, the licensee did not comply with the section cited above which poses a potential health, safety or personal rights risk to persons in care. LPA observed during record review three staff did not have a current Mandated Reporter Cert.
Based on video footage LPA observed children were left without supervision in the bathroom. This is a potential risk to the health, safety and personal rights of children in care.
Based on interviews, video footage and photos of the incident there was a violation of personal rights. This is an immediate risk to the Health and Safety and Personal Rights of children in care.
Based on what was reported by the facility and interviews conducted with staff there was a violation to Title 22 regulations. This is an immediate health, safety and persona rights risk to children in care Director stated she will send hourly supervision academic day name to face logs from 8:30 amd to 3:15 pm for 11/9/23 and send to CCL by 11/13/23.
Based on record review, the licensee did not comply with the section cited above in which poses a potential health, safety or personal rights risk to persons in care. LPA observed the facility conducted the lead testing on 1/31/23 and 2/1/23. On 2/9/23 the lead testing report was provided. Licensee stated there was not lead found.
Reporting Requirements (d) ... during the operation of the childcare center... a report shall be made ...within the Department's next working day ... (D)Any suspected physical or psychological abuse of any child. This requirement was not met a evidenced by Administrator sent the Unusual Incident Report to CCL 8/4/23. Administrator stated she will send a written statement of acknowledgment, understanding and compliance to regulation 101212 (d) (D) by 9/1/23. Based on record review the incident on 5/4/23 was not reported to Community Care Licensing until 8/4/23 and was not reported in a timely manner. This is a potential risk to the health and safety pf children in care.
Based on vdeo footage and interviews conducted a child was left alone on the playground This is an immediate health and safety risk to the children in care Civil Penally LIC 421IM repeat violation for $1,000.00was issued. supervision email on 5/1 that is required to be acknowledged by all staff. Director stated she will send a list of signatures confirming acknowledgment of the email and send to CCL 5/8/23.
Based on staff interviews conducted and administration admitting culpability a child was left alone in a classroom. This is an immediate risk to the health and safety of children care Civil penalty LIC421IM for $1,000.00 issued today.
Based on administration staff admitted to not reporting the incident to Community Care Licensing. This is a potential risk to the health and safety of children in care Director stated she will also have a training on reporting requirements and will send list of participants and topics to CCL by 3/15/23.
Based on incident self-reported by director a child was left, alone on school-grounds 2/8/23. This is an immediate risk to the health and safety of children in care. Civil penalty LIC421IM issued today for $1,000.00 (repeat violation) supervision training with all staff from an outside vendor and send list of participants and topics to CCL by 2/25/23.
Based on director self-reporting the incident that a child was left unattended in the classroom. This is an immediate risk to the health and safety of children in care. Civil Penalty LIC421IM for $500.00 assessed today. from CDSS on 4/08/22. Reminders on care and supervision are daily by director through emails. For future, director is putting together a video on scenarios of incidents that could happen in the facility regarding care and supervision.
How common are lead-in-water citations in San Bernardino County? See the county-by-county report →
Complaint investigations
Child left in the classroom unattended during an emergency drill
How often are complaints about daycares in San Bernardino County substantiated? See the county-by-county report →
About this center
Other licenses at this address
Common questions
Does St. Mary's Montessori School take infants?
Not under this license, which covers preschool-age children. An infant center is licensed separately at the same address (listed below).
Has St. Mary's Montessori School had any serious violations?
California issued 6 Type A citations since 2021, its most serious category. The most recent was on Sep 26, 2024, for personal rights. Each citation is listed in full above.
Have there been complaints about St. Mary's Montessori School?
California investigated 4 complaints since 2021 and substantiated 1. Allegations are shown only for substantiated complaints.
How does St. Mary's Montessori School compare with other daycares in Rancho Cucamonga?
It is tied for #33 of 35 centers in Rancho Cucamonga by weighted citations per inspection, and has more citations per inspection than 94% of California licensed centers with enough inspection history to compare.
When was St. Mary's Montessori School last inspected?
Apr 17, 2026. No citations were issued during that visit.
How much does St. Mary's Montessori School cost?
California does not publish individual centers’ prices, so ask St. Mary's Montessori School for its current tuition. For comparison, the median full-time price at licensed centers in San Bernardino County, which includes Rancho Cucamonga, was $835 a month for preschoolers (about $1,050 today) in the state’s 2021 Regional Market Rate Survey.
Who runs St. Mary's Montessori School?
The licensee is Himnel Usa Incorporated, and the administrator listed with the state is Deseree Jones.
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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 364841885 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.