A+ Immersion Preschool
A+ Immersion Preschool is a licensed child care center in San Mateo, CA, licensed for up to 30 children and serving preschool-age children. It has held its California license since 2011. Since February 2021, state licensing staff have inspected it 4 times. The state issued 3 citations, 0 of them Type A (the most serious), most often for building & playground safety (1 of 3). None came in the last 12 months. Measured by weighted citations per inspection, it is tied for #38 of 55 centers in San Mateo 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 results received from the certified water samplers, the facility exceeded 5.4 ppb of lead in their water source (B). This poses a potential health and safety risk to children in care. 8 Proof of correction will be submitted to the Department via email.
Based on record review, interview, and observations, LPA confirmed facility fixtures, used for drinking water and food preparation, have not been tested for lead exceedance levels. This pose a potential health and safety risk to children in care.
Based on observation and iinterview, the licensee did not comply with the section cited above in as person who is dropping off or picking up child are being signed in/out which poses/posed a potential health, safety or personal rights risk to persons in care.
How common are lead-in-water citations in San Mateo County? See the county-by-county report →
About this center
Common questions
Does A+ Immersion Preschool take infants?
Not under this license, which covers preschool-age children.
Has A+ Immersion Preschool had any serious violations?
No Type A citations since 2021. It has 3 Type B citations, listed above.
How does A+ Immersion Preschool compare with other daycares in San Mateo?
It is tied for #38 of 55 centers in San Mateo 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 A+ Immersion Preschool last inspected?
Jul 15, 2026. No citations were issued during that visit.
How much does A+ Immersion Preschool cost?
California does not publish individual centers’ prices, so ask A+ Immersion Preschool for its current tuition. For comparison, the median full-time price at licensed centers in San Mateo County, which includes San Mateo, was $1,619 a month for preschoolers (about $2,040 today) in the state’s 2021 Regional Market Rate Survey.
Who runs A+ Immersion Preschool?
The licensee is Sharon Lau, and the administrator listed with the state is Prg.dir. Sharon Lau.
Licensed centers nearby
178 South Boulevard, San Mateo · 0.1 mi away · 30 spotsAbout typicalBeresford Montessori
1717-1719 Gum Street, San Mateo · 0.2 mi away · 41 spotsNo citationsSan Mateo Montessori
15 - 14th Avenue, San Mateo · 0.3 mi away · 21 spotsAbout typicalLittle Footsteps
1501 S. El Camino Real, San Mateo · 0.3 mi away · 42 spotsNo citationsBeresford Montessori Academy INC.
1051 South Claremont Street, San Mateo · 0.3 mi away · 50 spotsNo citationsPapillon Preschool Managed By Bright Horizons
1311 So. El Camino Real, San Mateo · 0.3 mi away · 84 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 414002756 on the California Care Facility Search. Data refreshed Oct 3, 2026.