Enrollment
387
California · 2024-25 NCES data
Middle school (grades 6-8) · Jackson, CA
Federal NCES profile for Ione Junior High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 22/100.
The verdict
Ione Junior High earns 22/100 on the Resource Investment Index, even as it posts class sizes smaller than 70% of California schools.
Ione Junior High has class sizes smaller than 70% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Ione Junior High ranks #4 of 6 public schools in Jackson, CA.
NCES ID 060245009301 Verify on NCES CCD record →
Enrollment
387
California · 2024-25 NCES data
Teachers (FTE)
20.0
Federal CCD staff survey
Students per teacher
19.4:1
vs 21.5:1 California avg
-10% vs state
Free-lunch eligible
36.1%
vs 55.5% California avg
-35% vs state
How Ione Junior High compares with California and U.S. medians
Smaller classes than state median
19.4:1 - 2.1 below the California state median of 21.5:1, indicating smaller average class loads than typical schools in the state.
Ione Junior High is a mid-sized middle school in Jackson, California, enrolling 387 students.
Class sizes run a bit leaner than typical: 19.4:1 puts it in the smaller third of California schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 36.1% of students eligible for free meals.
With 387 students, its enrollment sits close to the California median campus size.
Its Resource Investment Index lands in the lower third of 9,998 scored California schools.
Among 1,074 similarly sized, similarly resourced-need California schools statewide, it ranks #843, in the lower tier once campus size and economic need are matched.
Its student body is led by White (63%) and Hispanic or Latino (28%) (diversity index 53/100).
Counselor availability sits well past the ASCA benchmark, roughly 387 students sharing each counselor, though short of the most stretched campuses.
Chronic absenteeism is elevated: 34.6% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Amador County Unified spends $12,622 per pupil, 24% below the California average, a leaner-resourced district than most.
Its district draws 17.5% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Discipline events run high: 78 in- and out-of-school suspensions were reported for 387 students in the 2021-22 Civil Rights Data Collection.
Among Jackson's middle schools, it stands alongside Jackson Junior High (270 students): Ione Junior High is larger than that campus by headcount and runs heavier classes (19.4:1 vs 13.5:1).
Amador County Unified also operates Amador High (615 students) and Argonaut High (593 students) alongside Ione Junior High.
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
Ione Junior High on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 19.4:1 | ▼ 10% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 36.1% | ▼ 35% | 55.5% | 51.7% |
| Enrollment | 387 | top 62% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
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.
Largest group: White at 62.5% of enrollment.
Simpson diversity index - at 52.9, Ione Junior High is more mixed than the California school average of 46.0.
District-wide per-pupil expenditure for Amador County Unified, which includes Ione Junior High.
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.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Amador High | Larger | Similar economic need | Similar S:T ratio |
| Argonaut High | Larger | Similar economic need | Similar S:T ratio |
| Ione Elementary | Larger | Similar economic need | Higher S:T ratio |
| Jackson Elementary | Similar size | Higher economic need | Higher S:T ratio |
| Sutter Creek Elementary | Similar size | Similar economic need | Higher S:T ratio |
Comparisons are relative to Ione Junior High's own figures; each column derives from NCES Common Core of Data.
1 comparable middle schools (grades 6-8) serving the same city.
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.
Next steps
Verify locally before acting on Ione Junior High's federal record.
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.
Ione Junior High has 387 students enrolled. It is a middle school in Jackson, CA.
The student-teacher ratio at Ione Junior High is 19.4:1, which is 10% lower than the California average of 21.5:1 and 24% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
36.1% of students at Ione Junior High are eligible for free lunch, compared to the California average of 55.5%.
The largest demographic group at Ione Junior High is White at 62.5% of enrollment, in Jackson, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 52.9/100.
Ione Junior High has a Resource Investment Index of 22/100 (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).
By Resource Investment Index, Ione Junior High ranks #4 of 6 public schools in Jackson, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Jackson on the city page.
Ione Junior High earns 22/100 on the Resource Investment Index, even as it posts class sizes smaller than 70% of 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.
Besides Ione Junior High, Amador County Unified also operates Amador High (615 students), Argonaut High (593 students), and Ione Elementary (564 students). See the Amador County Unified district page for the complete list.
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.
Published by
PlainSchools Editorial
Independent public-data reference that compiles, verifies, and contextualizes official datasets. We do not accept compensation from entities we cover, and every dataset cites its originating public source.
Last updated:
PlainSchools, “Ione Junior High, Jackson CA.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/ione-junior-high-ca
You are welcome to quote these figures with attribution to PlainSchools and the underlying source. The URL above is stable.