zReports Research Institute · Updated September 2026
Every daycare in Diamond Bar, CA, independently graded A to F from state child care licensing and enforcement records: 35 hold an A range grade. Diamond Bar's average score is 85, 0 above the California average. The grades are free.
| Statistic | Value |
|---|---|
| Active licensed daycares | 35 |
| Diamond Bar average records layer score | 85 |
| California statewide average | 85 (Diamond Bar +0) |
| A range grades | 35 (100%) |
| Combined licensed capacity | 1,464 |
Diamond Bar's 35 licensed daycares average a records layer score of 85, 0 points above the California statewide average of 85. See the full picture on the California Licensed Child Care Rankings & Safety Report.
Licensed child care in California is regulated by the California Department of Social Services’ Community Care Licensing Division, which licenses providers, conducts inspections, investigates complaints, and publishes enforcement actions on the public record. Those state filed records, not reviews, are what this page is computed from. One precision note: some programs are legally exempt from licensing in many states (certain school- or church-operated programs, and small home settings under the state’s size threshold) and therefore do not appear on the licensed register at all. This page covers every provider on California’s public licensing file.
Diamond Bar has 35 active licensed daycares on California's public file, with a combined licensed capacity of 1,464. Every one is ranked on this page with a free records layer grade.
Diamond Bar's average records layer score is 85, 0 points above the statewide average of 85.
The free records layer grade contains zero zReports judgment: it maps the government's own published verdicts, state child care licensing and enforcement records, through one fixed rule applied identically nationwide. The paid Consumer Intelligence Report™ adds the composite Consumer Z Score™ and audits the record against public reputation.
No. Facilities are never contacted, never notified, and cannot pay to be listed, delisted, or re-scored. Independence is the product.
This report was generated from the zReports Consumer Records Database™, a continuously updated database that normalizes official government licensing, inspection, enforcement, ownership, and safety records across multiple federal and state agencies. Every statistic in this report is traceable to its originating public record. Facilities cannot pay to alter scores, rankings, or findings.
Data source: zReports Consumer Intelligence Database™ v2026.09 · Built from: California child care licensing, inspection & enforcement records · Public consumer review signals (audited, never trusted, in the composite Consumer Z Score™) · Proprietary Consumer Z Score™ methodology · Updated: September 2026
APA, zReports Research Institute. (2026). Best Licensed Child Cares in Diamond Bar, CA. Rankings & Safety Records (v2026.09). zReports.org. https://zreports.org/rankings/daycare/ca/diamond-bar
MLA, zReports Research Institute. “Best Licensed Child Cares in Diamond Bar, CA. Rankings & Safety Records.” zReports.org, v2026.09, September 2026, zreports.org/rankings/daycare/ca/diamond-bar.
Plain, Best Licensed Child Cares in Diamond Bar, CA. Rankings & Safety Records, zReports Research Institute, v2026.09, updated September 2026, zreports.org/rankings/daycare/ca/diamond-bar
RANKED NIGHTLY FROM STATE CHILD CARE LICENSING AND ENFORCEMENT RECORDS · FACILITIES ARE NEVER CONTACTED AND CANNOT PAY TO CHANGE SCORES · METHODOLOGY