Arrow Montessori School - San Dimas · Preschool, San Dimas
Arrow Montessori School - San Dimas is a licensed child care center in San Dimas, CA, licensed for up to 48 children and serving preschool-age children. It has held its California license since 2011. Since February 2021, state licensing staff have inspected it 3 times and investigated 1 complaint, 0 of them substantiated. The state issued 3 citations, 1 of them Type A (the most serious). 2 citations came in the last 12 months, including 1 Type A. Measured by weighted citations per inspection, it is tied for #13 of 19 centers in San Dimas and has more citations per inspection than 76% of California licensed centers.
Inspection record
Every state visit
What inspectors cited most
Citations, newest first
Based on observation, interview, and record review, the licensee did not comply with the section cited above in one (1) out of four (4) staff present did not have Mandated Reporter training on file. Staff #2 (S#2) has a date of hire date of 03/2026 and per Director, has not completed AB 1207 training which poses/posed a potential health, safety or personal rights risk to persons in care.
Staff gave expired food such as graham crackers, to child in care with an expiration date of 10/17/2021.
Based on interview and record review, the licensee did not comply with the section cited above in drills were last conducted in October 2022, which was 8 months ago, which poses/posed a potential health, safety or personal rights risk to persons in care.
Complaint investigations
How often are complaints about daycares in Los Angeles County substantiated? See the county-by-county report →
About this center
Other licenses at this address
Common questions
Does Arrow Montessori School - San Dimas take infants?
Not under this license, which covers preschool-age children. An infant center is licensed separately at the same address (listed below).
Has Arrow Montessori School - San Dimas had any serious violations?
California issued 1 Type A citation since 2021, its most serious category. The most recent was on Apr 21, 2026, for food service. Each citation is listed in full above.
Have there been complaints about Arrow Montessori School - San Dimas?
California investigated 1 complaint since 2021 and substantiated 0. Allegations are shown only for substantiated complaints.
How does Arrow Montessori School - San Dimas compare with other daycares in San Dimas?
It is tied for #13 of 19 centers in San Dimas by weighted citations per inspection, and has more citations per inspection than 76% of California licensed centers with enough inspection history to compare.
When was Arrow Montessori School - San Dimas last inspected?
Jul 24, 2026. The state issued at least one citation during that visit.
How much does Arrow Montessori School - San Dimas cost?
California does not publish individual centers’ prices, so ask Arrow Montessori School - San Dimas for its current tuition. For comparison, the median full-time price at licensed centers in Los Angeles County, which includes San Dimas, was $1,087 a month for preschoolers (about $1,370 today) in the state’s 2021 Regional Market Rate Survey.
Who runs Arrow Montessori School - San Dimas?
The licensee is Primanti Montessori School - Whittier, INC., and the administrator listed with the state is Carolina Devilla-crelencia.
Licensed centers nearby
818 West Gladstone Street, San Dimas · under 0.1 mi away · 30 spots More citations than most Arrow Montessori School of San Dimas INC
818 W Gladstone Street, San Dimas · under 0.1 mi away · 48 spots No citations Dove Day School
908 W. Arrow Highway, San Dimas · 0.5 mi away · 24 spots More citations than most Dove Day School
908 W. Arrow Highway, San Dimas · 0.5 mi away · 85 spots More citations than most Dove Day School
908 W. Arrow Highway, San Dimas · 0.5 mi away · 60 spots More citations than most Options-headstart/Cdc-ekstrand
440 N. Walnut Ave, San Dimas · 1.2 mi away · 45 spots More 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 198016235 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.