Enrollment
109
California · 2024-25 NCES data
2024-25 NCES data High school (grades 9-12) NCES 060303010800 Charter school
Six Rivers Charter High — Arcata, CA
Federal NCES profile for Six Rivers Charter High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 10/100.
👥 Class size 13
📚 AP courses 5
🌟 Gifted program 30
🎓 Counselors 0
📋 Attendance 2
How this works: Each indicator above is scored 0–100 from federal NCES and CRDC data, then averaged into the Resource Investment Index. This measures resource allocation — staffing, programs, and support services — not standardized test scores or academic outcomes. Full methodology →
School address
District: Northern Humboldt Union High · California
Public location data per NCES (National Center for Education Statistics) Common Core of Data. Verify the school's current address on the NCES CCD record.
Teachers (FTE)
5.0
Federal CCD staff survey
Students per teacher
21.8:1
vs 21.6:1 California avg
+1% vs state
Free-lunch eligible
32.1%
vs 55.5% California avg
-42% vs state
Student-teacher ratio in context
How Six Rivers Charter High compares with California and U.S. medians
The federal record — no proprietary index, no editorial formula.
PlainSchools publishes the actual federal measurements — enrollment, staffing, demographics, discipline, and finance — straight from the NCES Common Core of Data, CRDC, and F-33 surveys. No composite rating, no opinion-based score on top. You get the same raw numbers researchers and policymakers use, with benchmarks, spending context, and equity indicators computed from the same federal datasets. Full methodology linked below.
What this school's NCES data tells you
Six Rivers Charter High reports 109 enrolled students to the National Center for Education Statistics (NCES) alongside 5.0 full-time-equivalent teachers, producing a 21.8:1 student-teacher ratio. That figure sits 1% above the California state mean of 21.6:1, signalling larger average class loads than peers in the same state. Against the national 2024-25 average of 15.9:1, it is 37% higher, a useful calibration for families comparing districts across state lines.
Title I and federal lunch eligibility offer another window into the student body: 32.1% of pupils qualify for free meals, a proxy for household income that federal programs use to direct funding. The free-lunch share is 42% below the California average and 38% below the national baseline. The school offers 1 Advanced Placement course, a stronger academic pipeline indicator than enrollment alone. Counselor coverage works out to roughly 1090 students per counselor, above the ASCA-recommended ceiling of 250:1. Chronic absenteeism — missing 10% or more of school days — stands at 39.4% according to the 2021-22 Civil Rights Data Collection.
On the finance side, the surrounding Northern Humboldt Union High spends $18,092 per pupil district-wide, above the California average of $18,039 and below the national average of $19,490. Revenue comes 43.3% from local sources (property taxes), 45.8% from the state, and 10.9% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 10/100 (F), calculated from 5 distinct NCES and CRDC indicators measuring resource allocation rather than academic outcomes.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Six Rivers Charter High compares
Cross-validating school-level NCES values against California state and U.S. national means lets readers see whether this school is an outlier or in line with peers.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 21.8:1 | ▲ 1% | 21.6:1 | 15.9:1 |
| Free-lunch eligible | 32.1% | ▼ 42% | 55.5% | 51.8% |
| Enrollment | 109 | top 11% | — | — |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
What the federal data reveals about equity at this school
Federal measurements — not ratings — surface the resource and opportunity picture. Below are the indicators that researchers, civil-rights monitors, and funding formulas use to assess equity.
Economic need
32.1%
free-lunch eligible
— 42% below the California average of 55.5%
Below the 40% Title I threshold — federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
21.8:1
students per teacher
— 1% above state mean
Top 47% in California — lower ratio than 53% of state schools
Above 20:1 — larger class loads than the typical U.S. public school; staffing is stretched relative to enrollment.
Engagement
39.4%
chronically absent (missed 10%+ of school days)
Chronic absenteeism at or above 20% — the CDC threshold for "high" — signals significant barriers to regular attendance.
Funding equity
$18,092
per pupil, district-wide
— above California avg of $18,039
Below the U.S. average per-pupil spend — funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.1 FTE
Per 1090 students — the combined health-and-guidance staffing load for this school.
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
Enrollment 109 Top 11% in California — larger than 89% of 10,006 state schools
Teachers (FTE) 5.0
Students per teacher 21.8:1 +1% vs state
Free-lunch eligible 32.1% -42% vs state
NCES ID 060303010800
Programs & staff
AP courses offered 1
Counselors (FTE) 0.1
Students per counselor 1090:1
Discipline & special education
Chronically absent 39.4%
In-school suspensions 0
Out-of-school suspensions 0
Funding & spending
District-wide per-pupil expenditure for Northern Humboldt Union High, which includes Six Rivers Charter High.
$18,092
Per student
+0%
vs California
Avg $18,039
-7%
vs U.S.
Avg $19,490
Revenue mix
Local 43.3%
State 45.8%
Federal 10.9%
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.
Other Schools in This District
- Enrollment
- 1,007
- Students per teacher
- 20.6:1
- Enrollment
- 566
- Students per teacher
- 17.9:1
- Enrollment
- 28
- Students per teacher
- 14.5:1
- Enrollment
- 24
- Students per teacher
- 19.5:1
Similar high schools in Arcata
2 comparable high schools (grades 9-12) serving the same city.
Educator & family resources
In-depth guides on understanding NCES data, school choice, and education funding.
Understanding NCES data
How CCD, CRDC and EDFacts feed every public-school number you see.
Choose a school district
Eight signals that matter more than the overall ranking number.
How schools are funded
Title I, F-33, state aid formulas and what per-pupil spending really means.
Chronic absenteeism
Why missing 10% of school matters and how it varies by district.
Magnet vs charter vs traditional
Three school types, three funding models, three sets of trade-offs.
School discipline data
What CRDC suspension and expulsion records do and don't reveal.
Frequently asked questions about Six Rivers Charter High
How many students attend Six Rivers Charter High?
Six Rivers Charter High has 109 students enrolled. It is a high school in Arcata, CA.
What is the student-teacher ratio at Six Rivers Charter High?
The student-teacher ratio at Six Rivers Charter High is 21.8:1, which is 1% higher than the California average of 21.6:1 and 37% higher than the national average of 15.9:1.
What percentage of students receive free lunch at Six Rivers Charter High?
32.1% of students at Six Rivers Charter High are eligible for free lunch, compared to the California average of 55.5%.
What is the Resource Investment Index for Six Rivers Charter High?
Six Rivers Charter High has a Resource Investment Index of 10/100 (F) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes.