Compare with peers
Most similar nearby schools
Aspire Langston Hughes Academy → Weston Ranch High School → Delta Charter High School → Ripon High School → Lathrop High School → Compare all similar →No UC admissions data on file for River Islands High.
This school doesn't appear in UCOP's source-school records (it may send few or no applicants to UC). Its enrollment trend and similar-school comparison are still below.
Enrollment trend & projection
If this trend holds (+97.9%/yr, Total enrollment)
At per-pupil funding of $ / student:
| Horizon | Projected Total enrollment | Change | Funding impact / yr |
|---|---|---|---|
| 1 yr (2027) | ~1,656 | +819 | $0 |
| 3 yr (2029) | ~6,487 | +5650 | $0 |
| 5 yr (2031) | ~25,404 | +24567 | $0 |
Straight-line extrapolation of the recent annual rate — a what-if, not a forecast of intent. Default = California's LCFF base grant for grades 9–12 ($12,423/ADA). Edit the figure to match your school.
Enrollment stability & demand — 2024-25
Two complementary signals: retention (do students stay once enrolled?) and demand (are families choosing the school?). Read against the San Joaquin County baseline — the demographic tide is moving every CA HS, so a school's gap vs. county is the actionable signal.
45 of 548 students who enrolled at River Islands High this year didn't maintain continuous enrollment (8.2% non-stability). Mid-year transfers, dropouts, and other exits are all counted.
Stability by student group
Nearest peer high schools
Source: California Department of Education, Stability Rate 2024-25. Benchmarks limited to non-virtual public & charter HS with ≥100 cumulative enrollees so by-design-high-churn continuation schools don't dominate the bottom of the distribution. Cumulative enrollment counts every student on the rolls during the year, so it can exceed peak-day enrollment.
Chronic absenteeism — 2024-25
Share of students missing 10% or more of expected attendance — the leading indicator that often precedes the demand decline shown above. Families disengaging tend to raise absenteeism first, then formally leave. Basis: grades 9–12.
Absenteeism is up 4.2 pp since 2022-23. A rising absenteeism trend often precedes formal departure — worth investigating which subgroups are driving it.
Source: California Department of Education, Chronic Absenteeism 2024-25. Benchmarks limited to non-virtual public & charter HS with ≥100 eligible students. CDE didn't publish a usable 2019-20 file (COVID).
SBAC academic outcomes — grade 11, 2025
Share of grade-11 students meeting or exceeding the California standard on Smarter Balanced ELA and Math. This is the academic-readiness signal that pairs with UC Reach (post-grad outcomes), stability (retention), and absenteeism (engagement). Note: statewide median Math is only ~20% — a school at 20% isn't an outlier; one at 45%+ genuinely is.
Source: California Assessment of Student Performance and Progress (CAASPP) Smarter Balanced research files. Benchmarks limited to non-virtual public & charter HS with ≥30 tested students.
Student composition — 2025-26
HS grades 9–12 racial/ethnic composition and program subgroups, from CDE Census Day Enrollment. Two-year shift shown when ≥1 pt — surfaces how the community served has changed since 2023-24.
Race / ethnicity
Program subgroups
Source: California Department of Education, Census Day Enrollment 2025-26 (HS grades 9–12). Δ shown when shift is ≥1 pt since 2023-24. Categories below 0.5% omitted.
River Islands High — Enrollment & Outcomes Snapshot
Public · vs. 10 most similar nearby schools
- ▸Enrollment has been growing (+97.9%/yr); projects to ~6487 by 2029.
Enrollment projection
Your school vs. its 10 most similar nearby schools
| School | Type | Size | UC Reach | Enroll. trend |
|---|---|---|---|---|
| River Islands High | Public | 837 | — | — |
| Peer-group median | 12.4% | +17% | ||
| Aspire Langston Hughes Academy | Public | 809 | 28.7% | +36% |
| Weston Ranch High School | Public | 1093 | 12.9% | +4% |
| Delta Charter High School | Public | 768 | — | -29% |
| Ripon High School | Public | 1002 | 18.4% | +15% |
| Lathrop High School | Public | 1492 | 12.4% | +19% |
| East Union High School | Public | 1567 | 7.2% | -9% |
| One.charter | Public | 1312 | — | +547% |
| Escalon High School | Public | 776 | 9.4% | -5% |
| Sierra High School | Public | 1743 | 7.4% | +31% |
| Aspire Benjamin Holt College Preparatory Academy | Public | 698 | — | +129% |
UC Reach = top-6 UC admits ÷ senior class (can exceed 100% when students are admitted to multiple campuses). Enrollment trend = first-to-latest grade-12 change on file. Similar schools matched on proximity, size, type. Methodology →