Enrollment
55
Oregon · 2024-25 NCES data
Other / mixed grade configuration · Eugene, OR
Twin Rivers Charter School
Federal NCES profile for Twin Rivers Charter School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 22/100.
2024-25 NCES dataOther / mixed grade configurationNCES 410474001848Charter school
👥 S:T ratio 27
🌟 Gifted program 30
📋 Attendance 9
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Twin Rivers Charter School earns 22/100 on the Resource Investment Index, with class sizes near the Oregon median. It is also one of the smallest schools in Oregon.
- #5 of 5
- schools in Eugene · Resource Index
- 22
- Resource Index · Lower
- 18.3:1
- students per teacher
- 55
- students enrolled
Twin Rivers Charter School has class sizes near the Oregon median. Computed live against every Oregon school reporting to NCES.
By Resource Investment Index, Twin Rivers Charter School ranks #5 of 5 schools in Eugene, OR.
School address
Teachers (FTE)
3.0
Federal CCD staff survey
Students per teacher
18.3:1
vs 17.6:1 Oregon avg
+4% vs state
Student-teacher ratio in context
How Twin Rivers Charter School compares with Oregon and U.S. medians
What stands out at Twin Rivers Charter School
Twin Rivers Charter School is a small charter combined-grade school in Eugene, Oregon, enrolling 55 students.
Class loads run somewhat heavier than typical: 18.3:1 puts it in the larger third of Oregon schools by student-teacher ratio.
This is a small campus: fewer students than 95% of Oregon schools, with 55 enrolled.
Its Resource Investment Index trails 94% of the 1,273 Oregon schools with a score on record, one of the lower results on this measure.
Its student body is led by White (67%) and Hispanic or Latino (19%) (diversity index 50/100).
Chronic absenteeism is elevated: 36.4% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Eugene's public schools, it stands alongside Teach-Nw (655 students): Twin Rivers Charter School is smaller than that campus by headcount and runs leaner classes (18.3:1 vs 54.6:1).
Eugene Sd 4j also operates South Eugene High School (1,499 students) and Sheldon High School (1,462 students) alongside Twin Rivers Charter School.
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 Twin Rivers Charter School compares
Twin Rivers Charter School on the metrics families compare, against Oregon and U.S. means.
| Metric | This school | vs Oregon | Oregon avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 18.3:1 | ▲ 4% | 17.6:1 | 15.7:1 |
| Enrollment | 55 | top 95% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
18.3:1
Leaner classes than 23% of US schools, heavier class loads than most.
55
Bigger than 6% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Staffing depth
18.3:1
students per teacher
- 4% above state mean
Top 63% in Oregon - lower ratio than 37% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
36.4%
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
$15,361
per pupil, district-wide
- below Oregon avg of $18,086
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 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
White 66.7%
Hispanic or Latino 18.5%
Two or More 13.0%
African American 1.9%
Largest group: White at 66.7% of enrollment.
Student-body diversity index 50.4/100
Simpson diversity index - at 50.4, Twin Rivers Charter School is more mixed than the Oregon school average of 47.1.
Programs
Funding & spending
District-wide per-pupil expenditure for Eugene Sd 4j, which includes Twin Rivers Charter School.
$15,361
Per student
-15%
vs Oregon
Avg $18,086
-7%
vs U.S.
Avg $16,593
Revenue mix
Local 48.1%
State 38.7%
Federal 13.3%
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 Twin Rivers Charter School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| South Eugene High School | Larger | No free-lunch data | No ratio data |
| Sheldon High School | Larger | No free-lunch data | No ratio data |
| North Eugene High School | Larger | No free-lunch data | No ratio data |
| Churchill High School | Larger | No free-lunch data | No ratio data |
| Gilham Elementary School | Larger | No free-lunch data | No ratio data |
Comparisons are relative to Twin Rivers Charter School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,499
- Students per teacher
- -
- Resource Index
- 32/100
- Enrollment
- 1,462
- Students per teacher
- -
- Resource Index
- 32/100
- Enrollment
- 1,079
- Students per teacher
- -
- Resource Index
- 39/100
- Enrollment
- 1,031
- Students per teacher
- -
- Resource Index
- 39/100
- Enrollment
- 572
- Students per teacher
- -
- Resource Index
- 33/100
Similar other schools in Eugene
5 comparable other schools (grades Mixed) serving the same city.
Teach-Nw
Standard public school
655 students 54.6:1 students per teacher
Lesd Life Skills
Standard public school
170 students
Network Charter School
Standard public school
119 students 17:1 students per teacher
Crow Middle/High School
Standard public school
70 students 7:1 students per teacher
Martin Luther King Jr. Education Center
Standard public school
7 students 2.3:1 students per teacher
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of Oregon, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~55 students)
Next steps
Verify locally before acting on Twin Rivers Charter School's federal record.
- Compare Twin Rivers Charter School against another school. Compare schools
- Eugene Sd 4j'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 Twin Rivers Charter School
How many students attend Twin Rivers Charter School?
Twin Rivers Charter School has 55 students enrolled. It is a public school in Eugene, OR.
What is the student-teacher ratio at Twin Rivers Charter School?
The student-teacher ratio at Twin Rivers Charter School is 18.3:1, which is 4% higher than the Oregon average of 17.6:1 and 17% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Twin Rivers Charter School?
The largest demographic group at Twin Rivers Charter School is White at 66.7% of enrollment, in Eugene, OR. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 50.4/100.
What is the Resource Investment Index for Twin Rivers Charter School?
Twin Rivers Charter School has a Resource Investment Index of 22/100 (lower reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Twin Rivers Charter School rank among schools in Eugene?
By Resource Investment Index, Twin Rivers Charter School ranks #5 of 5 schools in Eugene, OR. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Eugene on the city page.
Is Twin Rivers Charter School a good school?
Twin Rivers Charter School earns 22/100 on the Resource Investment Index, with class sizes near the Oregon median. It is also one of the smallest schools in Oregon. 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 Eugene Sd 4j?
Besides Twin Rivers Charter School, Eugene Sd 4j also operates South Eugene High School (1,499 students), Sheldon High School (1,462 students), and North Eugene High School (1,079 students). See the Eugene Sd 4j 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.