25 of Ontario's public and charter campuses ran a TK class in 2025-26, enrolling 973 four-year-olds.
Source: CDE 2025-26 Census Day enrollment, 25 campuses in Ontario.
| School | TK students | TK % of campus | Scope Score |
|---|---|---|---|
| Ranch View ElementaryDeveloping35 | 95 | 12.0% | Developing35 |
| Park View ElementaryStrong72 | 72 | 8.2% | Strong72 |
| Creek View ElementarySolid36 | 48 | 8.4% | Solid36 |
| Mountain View ElementaryDeveloping28 | 46 | 7.7% | Developing28 |
| Euclid ElementarySolid36 | 45 | 7.9% | Solid36 |
| Sultana ElementarySolid38 | 45 | 7.9% | Solid38 |
| El Camino ElementarySolid39 | 43 | 9.6% | Solid39 |
| Ontario CenterNeeds Support24 | 42 | 7.5% | Needs Support24 |
| Richard Haynes ElementaryDeveloping32 | 41 | 6.4% | Developing32 |
| Liberty ElementarySolid47 | 40 | 7.1% | Solid47 |
| Berlyn ElementaryDeveloping31 | 39 | 6.3% | Developing31 |
| Levi H. Dickey ElementaryDeveloping32 | 39 | 8.8% | Developing32 |
| Bon View ElementarySolid39 | 34 | 6.1% | Solid39 |
| Mariposa ElementaryDeveloping30 | 34 | 5.8% | Developing30 |
| Del Norte ElementaryDeveloping31 | 33 | 6.8% | Developing31 |
| Hawthorne ElementarySolid42 | 33 | 5.8% | Solid42 |
| Lincoln ElementarySolid38 | 33 | 6.5% | Solid38 |
| Elderberry ElementarySolid48 | 32 | 6.1% | Solid48 |
| Mission ElementaryDeveloping34 | 32 | 5.8% | Developing34 |
| Corona ElementarySolid46 | 31 | 6.5% | Solid46 |
| Vista Grande ElementarySolid42 | 31 | 9.1% | Solid42 |
| Arroyo ElementaryDeveloping28 | 30 | 6.3% | Developing28 |
| Vineyard ElementarySolid40 | 24 | 4.6% | Solid40 |
| Edison ElementaryStrong58 | 23 | 3.3% | Strong58 |
| Central Language AcademySolid41 | 8 | 1.1% | Solid41 |
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.
Embed this map
<iframe
src="https://schoolscope.co/embed/tk-map?city=ontario"
width="100%" height="420" loading="lazy"
style="border:1px solid #ccc;border-radius:8px"
title="Transitional kindergarten campuses in Ontario, CA — map by SchoolScope">
</iframe>
<p><small>TK data: <a href="https://schoolscope.co/ca/tk/ontario">SchoolScope — TK campuses in Ontario</a>,
from California Dept. of Education 2025-26 Census Day enrollment.</small></p>Free to embed with the credit link. Data updates automatically.
Data source: California Department of Education · Census Day enrollment 2025-26 · 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.