Elementary Schools in Ontario, California: Ontario schools average near the state. The 48.2-point spread is where the choice actually lives.
Ontario, California has 26 ranked elementary schools with an average Scope Score of 38.8/100 — within 0.1 points of the state average of 38.9. The highest-scoring school is Park View Elementary at 72/100, where 44.3% of students exceed the state standard on the 2025 CAASPP assessment. Ontario schools average 16.9% exceeded standard (state: 21.4%) — this exceeded-vs-met distinction shows how many students go beyond the standard rather than only meeting it. Of 26 schools, 3 Growth Engines stand out for their performance profiles. Chronic absenteeism averages 11.2% (below the state average of 17.9%). Data source: California Department of Education CAASPP 2025, analyzed by SchoolScope.
How Ontario schools compare
Ontario has 26 ranked elementary schools with an average Scope Score of 38.8/100 — within 0.1 points of the state average of 38.9 (CDE CAASPP 2025).
The top-ranked school is Park View Elementary with a Scope Score of 72 and 44.3% of students exceeding standard.
Chronic absenteeism in Ontario averages 11.2% — below the state average of 17.9%.
How we score · Weighted composite of test performance, growth, and school climate · Full weights on the methodology page
Elementary school archetypes in Ontario
Hidden gems: 17 schools in Ontario are classified as On the Rise (14) or Growth Engine (3) — showing positive growth trajectories that raw proficiency scores alone don't capture. These are schools where students leave with more than they arrived with.
Archetypes are data-driven labels based on Scope Score dimensions. Learn more
Every school in Ontario
ranked by Scope Score · 2024–25 CAASPP · levels never mixed
Elementary Schools (26)
| # | School | Exceeded | Score |
|---|---|---|---|
| 1 | Park View Elementary Mountain View Elementary | 44.3% | 95th percentile · StrongScope Score 72/100 |
| 2 | Edison Elementary Ontario-Montclair | 36.4% | 85th percentile · StrongScope Score 58/100 |
| 3 | Elderberry Elementary Ontario-Montclair | 22.8% | 73rd percentile · SolidScope Score 48/100 |
| 4 | Liberty Elementary Chino Valley Unified | 26.4% | 72nd percentile · SolidScope Score 47/100 |
| 5 | Corona Elementary Ontario-Montclair | 24.1% | 71st percentile · SolidScope Score 46/100 |
| 6 | Vista Grande Elementary Ontario-Montclair | 22.3% | 65th percentile · SolidScope Score 42/100 |
| 7 | Hawthorne Elementary Ontario-Montclair | 15.4% | 63rd percentile · SolidScope Score 42/100 |
| 8 | Central Language Academy Ontario-Montclair | 13.9% | 62nd percentile · SolidScope Score 41/100 |
| 9 | Online Academy Ontario-Montclair | 22.1% | 61st percentile · SolidScope Score 40/100 |
| 10 | Vineyard Elementary Ontario-Montclair | 14.8% | 60th percentile · SolidScope Score 40/100 |
| 11 | El Camino Elementary Ontario-Montclair | 16.0% | 59th percentile · SolidScope Score 39/100 |
| 12 | Bon View Elementary Ontario-Montclair | 12.4% | 57th percentile · SolidScope Score 39/100 |
| 13 | Lincoln Elementary Ontario-Montclair | 14.6% | 56th percentile · SolidScope Score 38/100 |
| 14 | Sultana Elementary Ontario-Montclair | 13.8% | 56th percentile · SolidScope Score 38/100 |
| 15 | Creek View Elementary Mountain View Elementary | 15.9% | 51st percentile · SolidScope Score 36/100 |
| 16 | Euclid Elementary Ontario-Montclair | 11.8% | 51st percentile · SolidScope Score 36/100 |
| 17 | Ranch View Elementary Mountain View Elementary | 19.3% | 47th percentile · DevelopingScope Score 35/100 |
| 18 | Mission Elementary Ontario-Montclair | 10.6% | 46th percentile · DevelopingScope Score 34/100 |
| 19 | Levi H. Dickey Elementary Chino Valley Unified | 15.6% | 41st percentile · DevelopingScope Score 32/100 |
| 20 | Richard Haynes Elementary Ontario-Montclair | 11.2% | 41st percentile · DevelopingScope Score 32/100 |
| 21 | Berlyn Elementary Ontario-Montclair | 8.5% | 37th percentile · DevelopingScope Score 31/100 |
| 22 | Del Norte Elementary Ontario-Montclair | 10.4% | 36th percentile · DevelopingScope Score 31/100 |
| 23 | Mariposa Elementary Ontario-Montclair | 10.0% | 35th percentile · DevelopingScope Score 30/100 |
| 24 | Mountain View Elementary Mountain View Elementary | 10.3% | 30th percentile · DevelopingScope Score 28/100 |
| 25 | Arroyo Elementary Ontario-Montclair | 8.5% | 29th percentile · DevelopingScope Score 28/100 |
| 26 | Ontario Center Cucamonga Elementary | 6.8% | 19th percentile · Needs SupportScope Score 24/100 |
Middle Schools (2)
| # | School | Exceeded | Score |
|---|---|---|---|
| 1 | Ray Wiltsey Middle Ontario-Montclair | 10.0% | 37th percentile · DevelopingScope Score 31/100 |
| 2 | Vina Danks Middle Ontario-Montclair | 8.5% | 28th percentile · DevelopingScope Score 27/100 |
High Schools (5)
| # | School | Exceeded | Score |
|---|---|---|---|
| 1 | Chaffey District Online High Chaffey Joint Union High | 42.6% | 70th percentile · SolidScope Score 60/100 |
| 2 | Ontario High Chaffey Joint Union High | 19.6% | 55th percentile · SolidScope Score 55/100 |
| 3 | Colony High Chaffey Joint Union High | 15.8% | 42nd percentile · DevelopingScope Score 50/100 |
| 4 | Chaffey High Chaffey Joint Union High | 16.7% | 34th percentile · DevelopingScope Score 48/100 |
| 5 | Valley View High (Continuation) Chaffey Joint Union High continuation high school | 1.3% | 27th percentile · DevelopingWithin its own school classScope Score 20/100 |
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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.
Private Schools in Ontario
Private schools don't participate in California's standardized testing (CAASPP) and cannot be scored or ranked. Showing enrollment, student-teacher ratio, and affiliation where available.
Numbers tell you whether students are clearing the bar. A school visit tells you whether they're happy doing it. These metrics are intentionally missing from the Scope Score: class sizes and student-teacher interaction quality; arts, music, athletics, and enrichment programs; teacher experience and turnover; campus safety and social-emotional support; parent and community engagement; quality of special education and gifted programs; how school zones and enrollment boundaries affect access. Full methodology