School Profile · Isleton
Isleton Elementary: The score is strong. The trajectory is stronger.
Isleton pairs 63% proficiency with gains of 6.5pp per cohort — the rare school that posts both.
412 Union Street, 95641 (opens in new tab)·River Delta Joint Unified·Isleton·Grades TK-6·188 students·79% low-income·2024–25 CAASPP·(916) 777-6515·Website
Scope Score
67
🚀 Growth Engine · Solid
ranked #616 statewide · #1 of 4 in River Delta Joint Unified
Isleton Elementary scores 67 of 100 on SchoolScope's Scope Score — the 88th percentile of 5,230 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 “63% proficient” and call it done. Isleton deserves a closer read. The school sits in Isleton, where three in four students qualify for free or reduced lunch — and reading the numbers without that context misreads the school.
The headline number: +6.5pp proficiency climbs from grade 3 to grade 5 across the school. The state average rises 4.5pp over the same span.
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.
35%
26%
39%
Grade 3 · 61% proficient
37%
32%
31%
Grade 4 · 69% proficient
52%
13%
35%
Grade 5 · 65% proficient
The honest read: the share exceeding rises 17.4pp across grades; the floor rises 4.4pp. 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.
57.3%
Low-income · ELA · met standard
Isleton's most underrated number
57.3% 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.
Isleton low-income: 57.3%State low-income: 38.2%
The 6 things our score weighs
Exceeded standard
37.8%
State 21.6%
16.2pp above state avg
Met or exceeded
63.3%
State 42.9%
20.4pp above state avg
Growth (G3→G5)
+6.5pp
State -3.0pp
Scores improve across grades
Chronic absenteeism
13.6%
State 18.1%
4.5pp below state avg
Suspension rate
1.4%
State 1.7%
0.2pp below state avg
EL proficiency (ELPAC)
21.9%
State 18.0%
3.9pp above state avg
Worth a school visit
Ask what changed — new curriculum, new principal, new program. Momentum has a cause, and a visit will find it.
Where the path goes
The path below follows attendance boundaries — scores shown for each next step.
K-12 Feeder Path
Elementary
Isleton Elementary
67/100
This school
Feeder patterns derived from NCES attendance boundary data. Boundaries are approximate and may have changed — verify with your school district for current assignments.
Planning ahead? 1 licensed preschools near this school →
Your other options
The community around it
Community Profile
Context — not part of the Scope ScoreStudent demographics
Hispanic64.4%
White29.8%
Black0.5%
Other5.3%
GenderFemale 50.5%Male 49.5%
Resources & Access
Enrollment
188
292 below CA avg (~480)
Transitional Kindergarten
12 TK students
7% of a 183-student campus · CDE Census Day 2025-26
Free/Reduced Lunch
79%
15pp above CA avg (64%)
Student-Teacher Ratio
24:1
3 more students per teacher than CA avg
Per-Pupil Spending
$17,054
District avg: $13,283 · CA avg: $14,815 · School-level · CDE ESSA
EL Proficiency (ELPAC)
21.9% Level 4
Share of English Learners reaching full proficiency
Teacher Salary Range
$62,399 – $111,138
District schedule · CA median ~$98K
At Isleton Elementary in Isleton, 57.3% of low-income students met or exceeded the ELA standard in 2025, compared to 30.7% district-wide and 38.2% statewide. Isleton Elementary outperforms its district average for low-income students by 26.6 percentage points in ELA. Other subgroups: Low-Income students (43.4% Math proficient); Hispanic students (59.2% ELA proficient). The largest proficiency gap is 7.1 percentage points for low-income students. Data source: California Department of Education, CAASPP 2024-25. 75 students tested.
Equity Gaps
Absenteeism · Homeless+21.7pp
35.3% vs 13.6% overall · n=17
Suspension · English Learner+3.5pp
4.9% vs 1.4% overall · n=41
Math · Hispanic−8.3pp
43.5% vs 51.8% overall · n=37
2 more gaps by subject
ELA · Low-Income−7.1pp
54.7% vs 61.8% overall · n=61
Math Exceeded · Low-Income−6.8pp
22.2% vs 28.9% overall · n=76
Subgroups with fewer than 15 students are excluded for privacy. Gaps of less than 3 percentage points are not shown.
Subgroup Proficiency
Low-Income76 tested
ELA 57.3%·Math 43.4%· +26.6pp vs district
Hispanic50 tested
ELA 59.2%·Math 38.0%· +29.9pp vs district
Weighted average across tested grades. Subgroups with fewer than 15 students excluded. Data: CDE CAASPP 2024-25.
Subgroup Growth by Grade
Change in proficiency from lowest tested grade. Shows which groups are gaining ground.
Low-income student ELA proficiency rises by 8.2pp from grade 3 to grade 5 at this school. District average: -2.8pp.
Subgroups with fewer than 10 tested students per grade are not shown.
Funding Breakdown
Neighborhood Context
Median Income
$75K
$10K below CA median
Median Home Value
$247K
$412K below CA median
Bachelor's+
20%
15pp below CA avg
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2024) · ZIP-level
Whole Child
Teacher experience, college/career readiness, and more. Context only — never part of the Scope Score.
Teacher Experience
14.0 years avg experience
12 teachers · 17% first-year
Teacher Credentials
89% fully credentialed
Source: CDE SARC, 2024-25
Community Profile provides context about who attends this school and the resources available. These factors are never part of the Scope Score. Learn why →
For the data nerdsEvery number on this page
Score factors, grade-level breakdowns, subgroup proficiency, and peer comparisons.
For the data nerds
Every number on this page
Score factors, grade-level breakdowns, subgroup proficiency, and peer comparisons.
01Score factorsWeighted composite · 2024–25
Exceeded standard · 43%
37.8%
↑ vs CA 21.6% · 65th pctile
Met or exceeded · 22%
63.3%
↑ vs CA 42.9% · 65th pctile
Growth (G3→G5) · 15%
+6.5pp
↑ vs CA -3.0pp · 88th pctile
Chronic absenteeism · 10%
13.6%
↑ vs CA 18.1% · 57th pctile
Suspension rate · 5%
1.4%
↑ vs CA 1.7% · 52th pctile
EL proficiency (ELPAC) · 5%
21.9%
↑ vs CA 18.0% · 54th pctile
02By grade & subgroupCAASPP 2024–25 · % of tested students
| ELA | Tested | EXC | MET | NEAR | NOT | MET+ | +/CA |
|---|---|---|---|---|---|---|---|
| Grade 3 | 23 | 35% | 26% | 22% | 17% | 61% | +17 |
| Grade 4 | 19 | 37% | 32% | 26% | 5% | 68% | +24 |
| Grade 5 | 23 | 52% | 13% | 30% | 4% | 65% | +17 |
| Grade 6 | 30 | 13% | 40% | 33% | 13% | 53% | +7 |
| Math | Tested | EXC | MET | NEAR | NOT | MET+ | +/CA |
|---|---|---|---|---|---|---|---|
| Grade 3 | 23 | 26% | 35% | 26% | 13% | 61% | +15 |
| Grade 4 | 20 | 25% | 30% | 35% | 10% | 55% | +13 |
| Grade 5 | 23 | 52% | 17% | 26% | 4% | 70% | +34 |
| Grade 6 | 30 | 13% | 10% | 37% | 40% | 23% | −12 |
| Science (CAST) | Tested | EXC | MET | NEAR | NOT |
|---|---|---|---|---|---|
| Grade 5/8/11 | 23 | 26% | 30% | 43% | 0% |
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 | 75 | 57.3% | +27 | +19 |
| Hispanic/Latino | 49 | 59.2% | +30 | +20 |
03Peer comparison · nearest elementary schoolssorted by Scope Score
| School | Dist | Scope | EXC | MET+ | Growth | Susp |
|---|---|---|---|---|---|---|
| Isleton Elementary ← | — | 67 | 37.8% | 63.3% | +6.5 | 1.4% |
| California average | — | 44 | 21.6% | 42.9% | −3.0 | 1.7% |
04More measurescontext · not all part of the Scope Score
Scope Score history
2019 · 2022 · 2023 · 2024 · 2025 · no testing 2020–21 (COVID) · rank #1707 → #1371 → #1958 → #1845 → #616
Source: CA Dept. of Education · CAASPP 2024–25 · n=5,230 elementary schools · Data updated 2026-07-03methodology · data updates · CSV · report issue
Frequently asked questions
Is Isleton Elementary a good elementary school?
Isleton Elementary has a Scope Score of 67 out of 100, placing it in the 88th percentile of California elementary schools and ranked #616 statewide. 37.8% of students exceeded the state standard on the 2025 CAASPP assessment, which is 16.2 percentage points above the California average of 21.6%. The Scope Score weights six dimensions for elementary schools: exceeded standard (43%), met or exceeded (22%), grade 3-to-5 growth (15%), chronic absenteeism (10%), ELPAC English Learner proficiency (5%), and suspension rate (5%). Data source: California Department of Education CAASPP 2025, analyzed by SchoolScope.
What are Isleton Elementary's CAASPP test scores?
On the 2025 CAASPP Smarter Balanced Assessment, 63.3% of students at Isleton Elementary met or exceeded the state standard in ELA and Math combined, and 37.8% exceeded it. The gap between those numbers matters: 25.5% of students are at the proficiency floor, while 37.8% pushed past it. Most rating sites report only the combined "proficient" number. SchoolScope surfaces the exceeded-vs-met split because it reveals whether a school's curriculum challenges students beyond minimum proficiency or paces toward it. 131 student-subject combinations were assessed.
How does Isleton Elementary rank in California?
Isleton Elementary ranks #616 among California elementary schools by Scope Score, placing it in the 88th percentile. This ranking is based on a weighted composite of 2025 CAASPP test performance (exceeded and met rates), grade-level growth (Grade 3 to grade 5 growth), chronic absenteeism, and suspension rate. Unlike single-number ratings, the Scope Score shows what drives the ranking so parents can decide what matters most to their family. See full methodology.
Is Isleton Elementary getting better or worse?
Based on 2025 CAASPP data, proficiency at Isleton Elementary increases by 6.5 percentage points from Grade 3 to grade 5 growth. This upward trajectory suggests the school is adding measurable value — students leave with higher proficiency rates than they entered with. Growth trajectory is weighted at 15% in the elementary Scope Score because it measures what the school does, not just who walks in the door.
What is the attendance and school culture like at Isleton Elementary?
13.6% of students at Isleton Elementary are chronically absent (missing 10% or more of school days), which is better than the California average of 18.1%. The suspension rate is 1.4%, indicating a low-discipline-incident environment. SchoolScope includes these culture metrics in the Scope Score because they reflect day-to-day school experience in ways test scores alone cannot.
How does Isleton Elementary compare to other schools in Isleton?
Isleton Elementary scores 67/100 (88th percentile) among California elementary schools. To compare with nearby schools, SchoolScope shows the same metrics side by side: exceeded rate, proficiency, growth trajectory, and school culture indicators. The school serves 188 students. Use the schools in Isleton page or the map view to compare all elementary schools nearby.
How does Isleton Elementary serve low-income and underrepresented students?
At Isleton Elementary in Isleton, 57.3% of low-income students met or exceeded the ELA standard in 2025, compared to 30.7% district-wide and 38.2% statewide. Isleton Elementary outperforms its district average for low-income students by 26.6 percentage points in ELA. Other subgroups: Low-Income students (43.4% Math proficient); Hispanic students (59.2% ELA proficient). The largest proficiency gap is 7.1 percentage points for low-income students. Data source: California Department of Education, CAASPP 2024-25. 75 students tested. SchoolScope shows disaggregated test scores by demographic subgroup so you can see how a school performs for your child's specific group — not just the school-wide average. Subgroup data is context, not part of the Scope Score: we don't penalize schools for who they serve. See our equity approach.