Elementary Schools in Rancho Cucamonga, California
Rancho Cucamonga, California has 12 ranked elementary schools with an average Scope Score of 43.5/100 — 0.3 points near the California state average of 43.8. The highest-scoring school is Los Osos High at 72/100, where 39.5% of students exceed the state standard on the 2025 CAASPP assessment. Rancho Cucamonga schools average 19.5% exceeded standard (state: 21.6%) — this exceeded-vs-met distinction reveals whether schools push students beyond proficiency or pace toward it. Chronic absenteeism averages 21.0% (above the state average of 18.1%). Data source: California Department of Education CAASPP 2025, analyzed by SchoolScope.
How Rancho Cucamonga schools compare
Rancho Cucamonga's 12 ranked elementary schools average a Scope Score of 43.5 — 0.3 points near the California state average of 43.8. Scores range from 26.7 to 71.6, a 45.0-point spread.
The top-ranked school is Los Osos High with a Scope Score of 72 and 39.5% of students exceeding standard.
Chronic absenteeism in Rancho Cucamonga averages 21.0%, which is below the state average of 18.1%.
How we score · Scope Score weights exceeded (40%), met (22%), growth (15%), absenteeism (10%), suspension (5%), ELPAC (5%), baseline (3%)
School archetypes in Rancho Cucamonga
Archetypes are data-driven labels based on Scope Score dimensions. Learn more
Schools in Rancho Cucamonga ranked by Scope Score
| # | School | Exceeded | Score |
|---|---|---|---|
| 1 | Los Osos High Chaffey Joint Union High Building Momentum | 39.5% | Strong 72/100 |
| 2 | Rancho Cucamonga High Chaffey Joint Union High Building Momentum | 33.2% | Solid 65/100 |
| 3 | Terra Vista Elementary Etiwanda Elementary Strong All-Around | 40.6% | Solid 59/100 |
| 4 | Valle Vista Elementary Central Elementary Building Momentum | 21.8% | Solid 52/100 |
| 5 | Ruth Musser Middle Central Elementary Building Momentum | 20.0% | Developing 42/100 |
| 6 | Dona Merced Elementary Central Elementary Building Momentum | 18.5% | Developing 41/100 |
| 7 | Cucamonga Middle Central Elementary Building Momentum | 15.9% | Developing 38/100 |
| 8 | Central Elementary Central Elementary Building Momentum | 14.3% | Developing 37/100 |
| 9 | Rancho Cucamonga Middle Cucamonga Elementary Building Momentum | 8.2% | Developing 31/100 |
| 10 | Los Amigos Elementary Cucamonga Elementary Building Momentum | 6.7% | Needs Support 29/100 |
| 11 | Cucamonga Elementary Cucamonga Elementary Building Momentum | 5.7% | Needs Support 29/100 |
| 12 | Bear Gulch Elementary Central Elementary Building Momentum | 9.1% | Needs Support 27/100 |
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 Rancho Cucamonga
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.
What Scope Scores can't tell you about Rancho Cucamonga
- Class sizes and student-teacher interaction quality
- Quality of arts, music, athletics, and enrichment programs
- Teacher experience, turnover, and professional development
- Campus safety, bullying climate, and social-emotional support
- Parent and community engagement levels
- Quality of special education and gifted programs
- How school zones and enrollment boundaries affect access
Scope Scores measure academic performance and school climate using public data. They are one lens among many. Full methodology