Mueller Charter (Robert L.): Kids show up here. Test scores are still catching up.
Mueller Charter (Robert L.)'s strongest numbers are the quiet ones: attendance and discipline. The academic picture is still developing — and culture is usually where that starts.
Mueller Charter (Robert L.) scores 42 of 100 on SchoolScope's Scope Score — the 55th percentile of 5,744 California elementary schools (CDE CAASPP 2025).
Measures test performance, attendance, and climate — not arts, community, or your kid. How we score →
Most rating sites would stop at “42% proficient” and call it done. Mueller Charter (Robert L.) deserves a closer read. The school sits in Chula Vista, where three in four students qualify for free or reduced lunch — and reading the numbers without that context misreads the school.
The headline number: 50.4% of low-income students met the ELA standard — versus 38.2% for the same group statewide.
As a charter, Mueller Charter (Robert L.) enrolls by application, not address — the score reads the same, the enrollment path doesn't.
The story this school is actually telling
The school, grade by grade
ELA · CAASPP 2024–25Different students, same year — each bar is one grade's proficiency mix.
The honest read: the share exceeding rises 6.9pp across grades; the floor rises 5.3pp. The state average rises 4.5pp over the same span. Kids here gain ground the longer they stay — the pattern you want to see. A school visit and conversation with teachers will tell you more than this number.
Mueller Charter (Robert L.)'s most underrated number
50.4% of low-income students met the ELA standard — versus 38.2% for the same group statewide. That's the strongest kind of signal a school can post: it holds across income lines.
The 5 things our score weighs
Ask how the school built its attendance culture — and what the academic plan looks like from here.
Where the path goes
The path below follows attendance boundaries — scores shown for each next step.
Estimated K-12 path based on district and proximity. Actual attendance zones may differ. Contact your school district for official feeder information.
Your other options
Private alternatives nearby
Private schools within ~10 miles. These schools do not participate in state testing and cannot be scored or ranked.
The community around it
Student demographics
3 more gaps by subject
Subgroups with fewer than 15 students are excluded for privacy. Gaps of less than 3 percentage points are not shown.
Weighted average across tested grades. Subgroups with fewer than 15 students excluded. Data: CDE CAASPP 2024-25.
Subgroup Growth by Grade
Low-income student ELA proficiency rises by 4.4pp from grade 3 to grade 5 at this school. District average: +9.7pp.
Subgroups with fewer than 10 tested students per grade are not shown.
Funding Breakdown
Neighborhood Context
Whole Child
Source: CDE SARC, 2024-25
For the data nerdsEvery number on this page
Score factors, grade-level breakdowns, subgroup proficiency, and peer comparisons.
Every number on this page
Score factors, grade-level breakdowns, subgroup proficiency, and peer comparisons.
| ELA | Tested | EXC | MET | NEAR | NOT | MET+ | +/CA |
|---|---|---|---|---|---|---|---|
| Grade 3 | 98 | 11% | 28% | 34% | 28% | 39% | −5 |
| Grade 4 | 116 | 19% | 22% | 20% | 39% | 41% | −3 |
| Grade 5 | 127 | 18% | 26% | 25% | 31% | 44% | −4 |
| Grade 6 | 112 | 16% | 46% | 21% | 18% | 62% | +15 |
| Grade 7 | 113 | 16% | 42% | 24% | 19% | 58% | +10 |
| Grade 8 | 110 | 13% | 37% | 35% | 15% | 50% | +4 |
| Grade 11 | 133 | 33% | 34% | 23% | 10% | 67% | +20 |
| Math | Tested | EXC | MET | NEAR | NOT | MET+ | +/CA |
|---|---|---|---|---|---|---|---|
| Grade 3 | 101 | 14% | 33% | 27% | 27% | 47% | +1 |
| Grade 4 | 116 | 18% | 29% | 27% | 26% | 47% | +6 |
| Grade 5 | 129 | 19% | 16% | 26% | 39% | 35% | −0 |
| Grade 6 | 116 | 22% | 16% | 34% | 28% | 39% | +4 |
| Grade 7 | 113 | 20% | 23% | 27% | 30% | 43% | +9 |
| Grade 8 | 110 | 10% | 14% | 29% | 47% | 24% | −9 |
| Grade 11 | 133 | 11% | 16% | 26% | 47% | 26% | +3 |
| Science (CAST) | Tested | EXC | MET | NEAR | NOT |
|---|---|---|---|---|---|
| Grade 5/8/11 | 374 | 7% | 26% | 58% | 9% |
CAST is tested in grades 5, 8, and once in high school — not annually. Not part of the Scope Score.
| Subgroup · ELA | Tested | MET+ | vs district | vs CA |
|---|---|---|---|---|
| Socioeconomically Disadvantaged | 637 | 50.4% | +5 | +12 |
| Hispanic/Latino | 742 | 50.8% | +2 | +12 |
| English Learners | 315 | 20.3% | +2 | +10 |
| School | Dist | Scope | EXC | MET+ | Growth | Susp |
|---|---|---|---|---|---|---|
| Mueller Charter (Robert L.) ← | — | 42 | 16.5% | 42.2% | −3.2 | 0.9% |
| Chula Vista Learning Community Charter | 0.6 mi | 56 | 23.5% | 51.1% | −5.1 | 0.1% |
| Montgomery (John J.) Elementary | 2.4 mi | 48 | 15.3% | 41.1% | +4.7 | 0.4% |
| Hilltop Drive Elementary | 1.7 mi | 44 | 19.8% | 45.4% | +9.2 | 1.3% |
| California average | — | 43 | 21.3% | 42.7% | −2.9 | 1.6% |
- — Scored here as an elementary school — other grade spans appear in the data appendix.