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Ages 2–5

Best Preschools in Diamond Bar

Top 12 licensed programs serving children ages 2–5, ranked by compliance record, parent reviews, and capacity.

12 preschool-capable facilities
0 top rated
50% clean record

Typical tuition

Average monthly cost in Los Angeles County

2022 median
$1,113
/ month
infant
$956
/ month
toddler
$974
/ month
preschool

Median cost at licensed child care centers. Licensed family child care homes typically cost 20-30% less (infant care around $732/month).

Diamond Bar has 12 licensed childcare providers serving preschool-age children (2–5), combining Child Care Centers and qualifying Family Child Care Homes. California caps preschool ratios at 1:12 (one caregiver per twelve kids). This guide ranks the top 12 by inspection record, parent reviews, and licensed capacity.

50% of the ranked programs have a clean inspection record with zero citations on file. Each facility's page shows the full inspection and complaint history so you can dig deeper before scheduling a tour.

Programs vary widely in philosophy — Montessori, Reggio Emilia, play-based, and academic models are all represented. Click any listing to see the teaching style (when the owner has published it), tuition ranges, and the latest CCLD inspection summary.

Top 12 Preschools in Diamond Bar

1

Diamond Bar Community Preschool

Excellent

Child Care Center · Diamond Bar

Capacity: 36 Est. preschool tuition: $900 – $1,200/mo
2

Limai Montessori Academy

Excellent

Child Care Center · Diamond Bar

Capacity: 102 Est. preschool tuition: $900 – $1,200/mo
3

Rm. 29 Golden Springs Child Development Center

Excellent

Child Care Center · Diamond Bar

Capacity: 15 Est. preschool tuition: $900 – $1,200/mo
4

Room 2 Diamond Point Child Development Center

Excellent

Child Care Center · Diamond Bar

Capacity: 40 Est. preschool tuition: $900 – $1,200/mo
5

Magnolia Progressive Montessori

Excellent

Child Care Center · Diamond Bar

Capacity: 77 Est. preschool tuition: $900 – $1,200/mo
6

Towne & County Preschool & Infant Center at Aqmd

Excellent

Child Care Center · Diamond Bar

Capacity: 76 Est. preschool tuition: $900 – $1,200/mo
7

Diamond Bar Montessori Academy

Good

Child Care Center · Diamond Bar

Capacity: 118 Est. preschool tuition: $900 – $1,200/mo
8

Mt. Calvary Lutheran Preschool & Day Care Center

Good

Child Care Center · Diamond Bar

Capacity: 72 Est. preschool tuition: $900 – $1,200/mo
9

Discovery World Montessori

Fair

Child Care Center · Diamond Bar

Capacity: 121 Est. preschool tuition: $900 – $1,200/mo
10

Ymca Early Learning Center

Fair

Child Care Center · Diamond Bar

Capacity: 63 Est. preschool tuition: $900 – $1,200/mo
11

La Petite Academy Inc.-grand Ave.

Fair

Child Care Center · Diamond Bar

Capacity: 118 Est. preschool tuition: $900 – $1,200/mo
12

Kiddie Academy of Diamond Bar

Poor

Child Care Center · Diamond Bar

Capacity: 100 Est. preschool tuition: $900 – $1,200/mo
Browse all preschool-capable facilities View all facilities in Diamond Bar

Frequently Asked Questions

How many licensed preschools are in Diamond Bar?
Diamond Bar has 12 licensed childcare programs that serve preschool-age children (ages 2–5). This includes dedicated preschool centers and family child care homes whose licenses cover this age group.
What's the difference between a preschool and a daycare center?
In California licensing terminology the two overlap significantly — most "preschools" are licensed as Child Care Centers that happen to serve children ages 2–5 with a structured curriculum. Dedicated preschool programs tend to emphasize school readiness, early literacy, and social-emotional development.
How much does preschool cost in Diamond Bar?
Typical monthly tuition for a preschool program in Los Angeles County is about $1,063 at a center and $943 at a family child care home (based on 2022 benchmark data). Part-day and half-day programs cost less.
What should I look for when choosing a preschool?
Look for a published curriculum or teaching philosophy, low teacher turnover, outdoor play space, a clean inspection history on the facility's page, and caregivers who engage warmly with children during your tour. Ask about ratio (state maximum is 1:12 for preschoolers), transition plans to kindergarten, and how behavior and conflict are handled.

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