Enrollment
2
California · 2024-25 NCES data
High school (grades 9-12) · Petrolia, CA
Mattole Triple Junction High
Federal NCES profile for Mattole Triple Junction High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 57/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 060003801994
👥 S:T ratio 92
📚 AP courses 5
🌟 Gifted program 30
🎓 Counselors 100
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mattole Triple Junction High earns 57/100 on the Resource Investment Index, with class sizes smaller than 99% of California schools. It is also one of the smallest schools in California.
- 57
- Resource Index · Higher
- 2:1
- small classes for California
- 2
- students enrolled
Mattole Triple Junction High has class sizes smaller than 99% of California schools. Computed live against every California school reporting to NCES.
School address
District: Mattole Unified · California
NCES ID 060003801994 Verify on NCES CCD record →
Teachers (FTE)
1.0
Federal CCD staff survey
Students per teacher
2:1
vs 21.5:1 California avg
-91% vs state
Student-teacher ratio in context
How Mattole Triple Junction High compares with California and U.S. medians
What stands out at Mattole Triple Junction High
Mattole Triple Junction High is a small high school in Petrolia, California, enrolling 2 students.
Classes run notably small here: at 2:1, Mattole Triple Junction High is leaner than roughly 99% of California schools and 91% under the state's 21.5:1 norm, more adult attention per pupil than most peers.
This is a small campus: fewer students than 99% of California schools, with 2 enrolled.
Its Resource Investment Index outscores 99% of the 9,998 California schools with a score on record, a top-tier result on this measure.
Its student body is led by White (50%) and Hispanic or Latino (50%) (diversity index 50/100).
On the academic-pipeline side it reports 1 Advanced Placement course.
Counselor coverage is strong, about 2 students per counselor, inside the American School Counselor Association's recommended 250:1.
The surrounding Mattole Unified spends $25,732 per pupil, 56% above the California average, a better-resourced district than most.
Mattole Unified also operates Mattole Elementary (27 students) and Honeydew Elementary (13 students) alongside Mattole Triple Junction 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
How Mattole Triple Junction High compares
Mattole Triple Junction 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 | 2:1 | ▼ 91% | 21.5:1 | 15.7:1 |
| Enrollment | 2 | top 100% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
2:1
Leaner classes than 100% of US schools, among the more generously staffed nationally.
2
Bigger than 0% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Staffing depth
2:1
students per teacher
- 91% below state mean
Top 1% in California - lower ratio than 100% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Funding equity
$25,732
per pupil, district-wide
- above California avg of $16,509
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors1.0 FTE
Per 2 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
- 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 50.0%
Hispanic or Latino 50.0%
Largest group: Hispanic or Latino at 50.0% of enrollment.
Student-body diversity index 50.0/100
Simpson diversity index - at 50.0, Mattole Triple Junction High is more mixed than the California school average of 46.0.
Programs
AP courses offered 1
Funding & spending
District-wide per-pupil expenditure for Mattole Unified, which includes Mattole Triple Junction High.
$25,732
Per student
+56%
vs California
Avg $16,509
+55%
vs U.S.
Avg $16,593
Revenue mix
Local 54.7%
State 43.1%
Federal 2.2%
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 Mattole Triple Junction High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Mattole Elementary | Larger | No free-lunch data | Higher S:T ratio |
| Honeydew Elementary | Larger | No free-lunch data | No ratio data |
Comparisons are relative to Mattole Triple Junction High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 27
- Students per teacher
- 9:1
- Resource Index
- 52/100
- Enrollment
- 13
- Students per teacher
- -
- Resource Index
- 46/100
Similar high schools statewide
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.
Similar enrollment (~2 students)
Similar student-teacher ratio (~2:1)
Next steps
Verify locally before acting on Mattole Triple Junction High's federal record.
- Compare Mattole Triple Junction High against another school. Compare schools
- Mattole Unified'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 Mattole Triple Junction High
How many students attend Mattole Triple Junction High?
Mattole Triple Junction High has 2 students enrolled. It is a high school in Petrolia, CA.
What is the student-teacher ratio at Mattole Triple Junction High?
The student-teacher ratio at Mattole Triple Junction High is 2:1, which is 91% lower than the California average of 21.5:1 and 87% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Mattole Triple Junction High?
The largest demographic group at Mattole Triple Junction High is Hispanic or Latino at 50.0% of enrollment, in Petrolia, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 50.0/100.
What is the Resource Investment Index for Mattole Triple Junction High?
Mattole Triple Junction High has a Resource Investment Index of 57/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, AP course offerings, counselor availability. Not a test-score or academic measure (national median ~41/100, see methodology).
Is Mattole Triple Junction High a good school?
Mattole Triple Junction High earns 57/100 on the Resource Investment Index, with class sizes smaller than 99% of California schools. It is also one of the smallest schools in California. 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 Mattole Unified?
Besides Mattole Triple Junction High, Mattole Unified also operates Mattole Elementary (27 students) and Honeydew Elementary (13 students). See the Mattole Unified 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.