Enrollment
1,239
California · 2024-25 NCES data
2024-25 NCES data Middle school (grades 6-8) NCES 064251006956
Arroyo Seco Junior High — Valencia, CA
Federal NCES profile for Arroyo Seco Junior High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 28/100.
👥 Class size 1
🌟 Gifted program 30
🎓 Counselors 17
📋 Attendance 63
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: William S. Hart 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)
49.0
Federal CCD staff survey
Students per teacher
24.8:1
vs 21.6:1 California avg
+15% vs state
Free-lunch eligible
16.4%
vs 55.5% California avg
-70% vs state
Student-teacher ratio in context
How Arroyo Seco Junior 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
Arroyo Seco Junior High reports 1,239 enrolled students to the National Center for Education Statistics (NCES) alongside 49.0 full-time-equivalent teachers, producing a 24.8:1 student-teacher ratio. That figure sits 15% 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 56% higher, a useful calibration for families comparing districts across state lines.
Title I and federal lunch eligibility offer another window into the student body: 16.4% of pupils qualify for free meals, a proxy for household income that federal programs use to direct funding. The free-lunch share is 70% below the California average and 68% below the national baseline. Counselor coverage works out to roughly 413 students per counselor, above the ASCA-recommended ceiling of 250:1. Chronic absenteeism — missing 10% or more of school days — stands at 14.9% according to the 2021-22 Civil Rights Data Collection.
On the finance side, the surrounding William S. Hart Union High spends $18,017 per pupil district-wide, below the California average of $18,039 and below the national average of $19,490. Revenue comes 28.8% from local sources (property taxes), 59.6% from the state, and 11.6% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 28/100 (F), calculated from 4 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 Arroyo Seco Junior 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 | 24.8:1 | ▲ 15% | 21.6:1 | 15.9:1 |
| Free-lunch eligible | 16.4% | ▼ 70% | 55.5% | 51.8% |
| Enrollment | 1,239 | top 92% | — | — |
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
16.4%
free-lunch eligible
— 70% 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
24.8:1
students per teacher
— 15% above state mean
Top 80% in California — lower ratio than 20% of state schools
Above 20:1 — larger class loads than the typical U.S. public school; staffing is stretched relative to enrollment.
Engagement
14.9%
chronically absent (missed 10%+ of school days)
Between 10–20% — above the pre-pandemic baseline of ~15% nationally but within the current U.S. range.
Funding equity
$18,017
per pupil, district-wide
— below California avg of $18,039
Below the U.S. average per-pupil spend — funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors3.0 FTE
Per 413 students — the combined health-and-guidance staffing load for this school.
Discipline context
6
in-school suspensions + 28 out-of-school
Suspension rate: 0.5 per 100 students. Combined in-school and out-of-school rate: 2.7 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 1,239 Top 92% in California — larger than 8% of 10,006 state schools
Teachers (FTE) 49.0
Students per teacher 24.8:1 +15% vs state
Free-lunch eligible 16.4% -70% vs state
NCES ID 064251006956
Student demographics
Hispanic or Latino 38.2%
White 38.1%
Asian 13.2%
Two or More 7.2%
African American 3.0%
American Indian / Alaska Native 0.3%
Largest group: Hispanic or Latino at 38.2% of enrollment.
Programs & staff
Counselors (FTE) 3.0
Students per counselor 413:1
Discipline & special education
Chronically absent 14.9%
In-school suspensions 6
Out-of-school suspensions 28
Funding & spending
District-wide per-pupil expenditure for William S. Hart Union High, which includes Arroyo Seco Junior High.
$18,017
Per student
0%
vs California
Avg $18,039
-8%
vs U.S.
Avg $19,490
Revenue mix
Local 28.8%
State 59.6%
Federal 11.6%
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
- 2,317
- Students per teacher
- 25:1
- Enrollment
- 2,286
- Students per teacher
- 22.8:1
- Enrollment
- 1,980
- Students per teacher
- 23:1
- Enrollment
- 1,952
- Students per teacher
- 23.2:1
- Enrollment
- 1,941
- Students per teacher
- 22.6:1
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 Arroyo Seco Junior High
How many students attend Arroyo Seco Junior High?
Arroyo Seco Junior High has 1,239 students enrolled. It is a middle school in Valencia, CA.
What is the student-teacher ratio at Arroyo Seco Junior High?
The student-teacher ratio at Arroyo Seco Junior High is 24.8:1, which is 15% higher than the California average of 21.6:1 and 56% higher than the national average of 15.9:1.
What percentage of students receive free lunch at Arroyo Seco Junior High?
16.4% of students at Arroyo Seco Junior High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Arroyo Seco Junior High?
The largest demographic group at Arroyo Seco Junior High is Hispanic or Latino at 38.2%. The school serves a diverse student body in Valencia, CA.
What is the Resource Investment Index for Arroyo Seco Junior High?
Arroyo Seco Junior High has a Resource Investment Index of 28/100 (F) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. This index measures federal resource allocation — staffing levels, program availability, and support services — not standardized test scores or academic outcomes.