Enrollment
188
California · 2024-25 NCES data
Elementary school (grades K-5) · Isleton, CA
Isleton Elementary
Federal NCES profile for Isleton Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 24/100.
2024-25 NCES dataElementary school (grades K-5)NCES 063311005124
👥 S:T ratio 16
🌟 Gifted program 30
🎓 Counselors 25
📋 Attendance 27
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Isleton Elementary earns 24/100 on the Resource Investment Index, with class sizes near the California median.
- 24
- Resource Index · Lower
- 20.9:1
- students per teacher
- 52.6%
- free-lunch eligible
- 188
- students enrolled
Isleton Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
School address
District: River Delta Joint Unified · California
NCES ID 063311005124 Verify on NCES CCD record →
Teachers (FTE)
9.0
Federal CCD staff survey
Students per teacher
20.9:1
vs 21.5:1 California avg
-3% vs state
Free-lunch eligible
52.6%
vs 55.5% California avg
-5% vs state
Student-teacher ratio in context
How Isleton Elementary compares with California and U.S. medians
What stands out at Isleton Elementary
Isleton Elementary is a higher-need, mid-sized elementary school in Isleton, California, enrolling 188 students.
At 20.9:1, 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 52.6% lands close to the California typical range, neither a high- nor low-need campus by this measure.
Enrollment of 188 puts it in the smaller third of California schools by headcount.
Its Resource Investment Index lands in the lower third of 9,998 scored California schools.
Among 428 similarly sized, similarly resourced-need California schools statewide, it ranks #327, in the lower tier once campus size and economic need are matched.
Its student body is led by Hispanic or Latino (64%) and White (30%) (diversity index 50/100).
Counselor availability sits well past the ASCA benchmark, roughly 376 students sharing each counselor, though short of the most stretched campuses.
Chronic absenteeism is elevated: 29.3% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
River Delta Joint Unified also operates D. H. White Elementary (432 students) and Rio Vista High (317 students) alongside Isleton Elementary.
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 Isleton Elementary compares
Isleton Elementary on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 20.9:1 | ▼ 3% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 52.6% | ▼ 5% | 55.5% | 51.7% |
| Enrollment | 188 | top 84% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
20.9:1
Leaner classes than 13% of US schools, heavier class loads than most.
188
Bigger than 18% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
52.6%
free-lunch eligible
- 5% below the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
20.9:1
students per teacher
- 3% below state mean
Top 42% in California - lower ratio than 58% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
29.3%
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.
Funding equity
$13,859
per pupil, district-wide
- below California avg of $16,509
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.5 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 2 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 1.1 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 64.4%
White 29.8%
Two or More 3.7%
Asian 1.1%
African American 0.5%
Native Hawaiian / Pacific Islander 0.5%
Largest group: Hispanic or Latino at 64.4% of enrollment.
Student-body diversity index 49.5/100
Simpson diversity index - at 49.5, Isleton Elementary is more mixed than the California school average of 46.0.
Programs
Funding & spending
District-wide per-pupil expenditure for River Delta Joint Unified, which includes Isleton Elementary.
$13,859
Per student
-16%
vs California
Avg $16,509
-16%
vs U.S.
Avg $16,593
Revenue mix
Local 50.1%
State 41.9%
Federal 8.0%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Isleton Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| D. H. White Elementary | Larger | Similar economic need | Higher S:T ratio |
| Rio Vista High | Larger | Similar economic need | Lower S:T ratio |
| Delta High | Similar size | Similar economic need | Lower S:T ratio |
| Clarksburg Middle | Similar size | Similar economic need | Similar S:T ratio |
| Riverview Middle | Similar size | Similar economic need | Lower S:T ratio |
Comparisons are relative to Isleton Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 432
- Students per teacher
- 33.2:1
- Resource Index
- 7/100
- Enrollment
- 317
- Students per teacher
- 14.4:1
- Resource Index
- 37/100
- Enrollment
- 196
- Students per teacher
- 15.1:1
- Resource Index
- 43/100
- Enrollment
- 171
- Students per teacher
- 21.4:1
- Resource Index
- 15/100
- Enrollment
- 160
- Students per teacher
- 17.8:1
- Resource Index
- 33/100
Similar elementary 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 (~188 students)
Similar student-teacher ratio (~20.9:1)
Next steps
Verify locally before acting on Isleton Elementary's federal record.
- Compare Isleton Elementary against another school. Compare schools
- River Delta Joint Unified'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 Isleton Elementary
How many students attend Isleton Elementary?
Isleton Elementary has 188 students enrolled. It is an elementary school in Isleton, CA.
What is the student-teacher ratio at Isleton Elementary?
The student-teacher ratio at Isleton Elementary is 20.9:1, which is 3% lower than the California average of 21.5:1 and 33% 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 Isleton Elementary?
52.6% of students at Isleton Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Isleton Elementary?
The largest demographic group at Isleton Elementary is Hispanic or Latino at 64.4% of enrollment, in Isleton, CA.
What is the Resource Investment Index for Isleton Elementary?
Isleton Elementary has a Resource Investment Index of 24/100 (lower 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).
Is Isleton Elementary a good school?
Isleton Elementary earns 24/100 on the Resource Investment Index, with class sizes near the California median. 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 River Delta Joint Unified?
Besides Isleton Elementary, River Delta Joint Unified also operates D. H. White Elementary (432 students), Rio Vista High (317 students), and Delta High (196 students). See the River Delta Joint Unified district page for the complete list.
Related tools
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.