Enrollment
1,542
California · 2024-25 NCES data
Other / mixed grade configuration · Chula Vista, CA
Mueller Charter (Robert L.)
Federal NCES profile for Mueller Charter (Robert L.), including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 46/100.
2024-25 NCES dataOther / mixed grade configurationNCES 060157800869Charter school
👥 S:T ratio 14
🌟 Gifted program 70
🎓 Counselors 52
📋 Attendance 49
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mueller Charter (Robert L.) earns 46/100 on the Resource Investment Index, with class sizes near the California median. It is also less racially and ethnically mixed than most California schools.
- #4 of 10
- schools in Chula Vista · Resource Index
- 46
- Resource Index · Typical
- 21.4:1
- students per teacher
- 65.6%
- free-lunch eligible
Mueller Charter (Robert L.) has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Mueller Charter (Robert L.) ranks #4 of 10 schools in Chula Vista, CA.
School address
District: Mueller Charter (Robert L.) District · California
NCES ID 060157800869 Verify on NCES CCD record →
Teachers (FTE)
72.0
Federal CCD staff survey
Students per teacher
21.4:1
vs 21.5:1 California avg
-0% vs state
Free-lunch eligible
65.6%
vs 55.5% California avg
+18% vs state
Student-teacher ratio in context
How Mueller Charter (Robert L.) compares with California and U.S. medians
What stands out at Mueller Charter (Robert L.)
Mueller Charter (Robert L.) is a higher-need, large charter combined-grade school in Chula Vista, California, enrolling 1,542 students.
At 21.4:1, its student-teacher ratio sits close to the California median, within a few percentage points of the 21.5:1 state norm, neither notably crowded nor notably small.
Its free-meal eligibility rate of 65.6% lands close to the California typical range, neither a high- nor low-need campus by this measure.
By headcount it is one of the larger campuses in California, bigger than 94% of state schools at 1,542 students.
Its Resource Investment Index lands in the upper third of 9,998 scored California schools.
Among 400 similarly sized, similarly resourced-need California schools statewide, it ranks #7, a top-tier result once campus size and economic need are matched.
Its student body is predominantly Hispanic or Latino (92% of enrollment), among the less diverse in the state (diversity index 14/100).
Counselor coverage is strong, about 240 students per counselor, inside the American School Counselor Association's recommended 250:1.
Attendance runs somewhat below the norm, with 20.5% of students chronically absent per the 2021-22 civil-rights collection.
Among Chula Vista's public schools, it stands alongside Chula Vista Learning Community Charter (1,397 students): Mueller Charter (Robert L.) is larger than that campus by headcount and runs heavier classes (21.4:1 vs 20.5:1).
Mueller Charter (Robert L.) District is a single-school charter district, so Mueller Charter (Robert L.) operates independently rather than alongside district-mates.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Mueller Charter (Robert L.) compares
Mueller Charter (Robert L.) on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 21.4:1 | ▼ 0% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 65.6% | ▲ 18% | 55.5% | 51.7% |
| Enrollment | 1,542 | top 6% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
21.4:1
Leaner classes than 12% of US schools, heavier class loads than most.
1,542
Bigger than 96% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
65.6%
free-lunch eligible
- 18% above the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
21.4:1
students per teacher
- 0% below state mean
Top 47% in California - lower ratio than 53% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
20.5%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Support staff
Counselors6.4 FTE
Per 240 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 21 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 1.4 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
Hispanic or Latino 92.4%
White 3.6%
Two or More 1.6%
African American 1.1%
Asian 1.1%
American Indian / Alaska Native 0.2%
Largest group: Hispanic or Latino at 92.4% of enrollment.
Student-body diversity index 14.4/100
Simpson diversity index - at 14.4, Mueller Charter (Robert L.) is less mixed than the California school average of 46.0.
Programs
Gifted & talented Yes
Similar other schools in Chula Vista
6 comparable other schools (grades Mixed) serving the same city.
Chula Vista Learning Community Charter
Standard public school
1,397 students 20.5:1 students per teacher
Hawking S.T.E.a.M. Charter
Standard public school
1,321 students 21.3:1 students per teacher
Pacific Springs Charter
Standard public school
489 students 28.8:1 students per teacher
Learning Choice Academy - Chula Vista
Standard public school
437 students 19.9:1 students per teacher
Sweetwater Secondary
Standard public school
372 students 37.2:1 students per teacher
Palomar High
Alternative education program
269 students 13.4:1 students per teacher
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of California, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~1,542 students)
Similar student-teacher ratio (~21.4:1)
Next steps
Verify locally before acting on Mueller Charter (Robert L.)'s federal record.
- Compare Mueller Charter (Robert L.) against another school. Compare schools
- Mueller Charter (Robert L.) District's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Mueller Charter (Robert L.)
How many students attend Mueller Charter (Robert L.)?
Mueller Charter (Robert L.) has 1,542 students enrolled. It is a public school in Chula Vista, CA.
What is the student-teacher ratio at Mueller Charter (Robert L.)?
The student-teacher ratio at Mueller Charter (Robert L.) is 21.4:1, which is 0% lower than the California average of 21.5:1 and 36% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Mueller Charter (Robert L.)?
65.6% of students at Mueller Charter (Robert L.) are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Mueller Charter (Robert L.)?
The largest demographic group at Mueller Charter (Robert L.) is Hispanic or Latino at 92.4% of enrollment, in Chula Vista, CA.
What is the Resource Investment Index for Mueller Charter (Robert L.)?
Mueller Charter (Robert L.) has a Resource Investment Index of 46/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Mueller Charter (Robert L.) rank among schools in Chula Vista?
By Resource Investment Index, Mueller Charter (Robert L.) ranks #4 of 10 schools in Chula Vista, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Chula Vista on the city page.
Is Mueller Charter (Robert L.) a good school?
Mueller Charter (Robert L.) earns 46/100 on the Resource Investment Index, with class sizes near the California median. It is also less racially and ethnically mixed than most California schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Mueller Charter (Robert L.) District?
None; Mueller Charter (Robert L.) District is a single-school charter district, and Mueller Charter (Robert L.) is its only campus.
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Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.