6 of Diamond Bar's public and charter campuses ran a TK class in 2025-26, enrolling 215 four-year-olds.
Source: CDE 2025-26 Census Day enrollment, 6 campuses in Diamond Bar.
| School | TK students | TK % of campus | Scope Score |
|---|---|---|---|
| Quail Summit Elementary | 45 | 6.4% | Strong73 |
| Maple Hill Elementary | 39 | 6.4% | Strong82 |
| Castle Rock Elementary | 38 | 5.7% | Solid68 |
| Golden Springs Elementary | 38 | 9.1% | Developing41 |
| Evergreen Elementary | 37 | 5.4% | Strong72 |
| Armstrong Elementary | 18 | 8.3% | Developing43 |
Embed this map
<iframe
src="https://schoolscope.co/embed/tk-map?city=diamond-bar"
width="100%" height="420" loading="lazy"
style="border:1px solid #ccc;border-radius:8px"
title="Transitional kindergarten campuses in Diamond Bar, CA — map by SchoolScope">
</iframe>
<p><small>TK data: <a href="https://schoolscope.co/ca/tk/diamond-bar">SchoolScope — TK campuses in Diamond Bar</a>,
from California Dept. of Education 2025-26 Census Day enrollment.</small></p>Free to embed with the credit link. Data updates automatically.
This is a single-day headcount — California's 2025-26 Census Day snapshot, not an ongoing enrollment feed. A campus missing from this list may still offer TK; our census match covers most but not all active campuses (no match here means "unknown," not "no TK"). And a school having TK doesn't guarantee it has an open seat for your child this year — enrollment isn't the same as availability. Call the school or check with the district to confirm.
Data source: California Department of Education · CAASPP 2024-25 · Methodology
Scores are SchoolScope's analysis of public data, not official CDE ratings. They represent one way of interpreting test results and should not be the sole basis for school decisions.