Enrollment
224
Illinois · 2024-25 NCES data
2024-25 NCES data High school (grades 9-12) NCES 173657003764
Somonauk High School — Somonauk, IL
Federal NCES profile for Somonauk High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — Resource Investment Index 45/100.
👥 Class size 44
📚 AP courses 30
🌟 Gifted program 30
🎓 Counselors 55
📋 Attendance 66
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: Somonauk Cusd 432 · Illinois
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)
17.0
Federal CCD staff survey
Students per teacher
14:1
vs 14.6:1 Illinois avg
-4% vs state
Student-teacher ratio in context
How Somonauk High School compares with Illinois 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
Somonauk High School reports 224 enrolled students to the National Center for Education Statistics (NCES) alongside 17.0 full-time-equivalent teachers, producing a 14:1 student-teacher ratio. That figure sits 4% below the Illinois state mean of 14.6:1, signalling more teacher attention per pupil than the state benchmark. Against the national 2024-25 average of 15.9:1, it is 12% lower, a useful calibration for families comparing districts across state lines.
The school offers 6 Advanced Placement courses, a stronger academic pipeline indicator than enrollment alone. Counselor coverage works out to roughly 224 students per counselor, meeting the American School Counselor Association recommendation of 250:1. Chronic absenteeism — missing 10% or more of school days — stands at 13.8% according to the 2021-22 Civil Rights Data Collection.
On the finance side, the surrounding Somonauk Cusd 432 spends $17,402 per pupil district-wide, below the Illinois average of $20,099 and below the national average of $19,490. Revenue comes 62.5% from local sources (property taxes), 31.9% from the state, and 5.6% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a Resource Investment Index of 45/100 (D), 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 Somonauk High School compares
Cross-validating school-level NCES values against Illinois state and U.S. national means lets readers see whether this school is an outlier or in line with peers.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 14:1 | ▼ 4% | 14.6:1 | 15.9:1 |
| Enrollment | 224 | top 22% | — | — |
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.
Staffing depth
14:1
students per teacher
— 4% below state mean
Top 56% in Illinois — lower ratio than 44% of state schools
Below the 15:1 benchmark — typical of schools with smaller class sizes and more individualized attention.
Engagement
13.8%
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
$17,402
per pupil, district-wide
— below Illinois avg of $20,099
Below the U.S. average per-pupil spend — funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 224 students — the combined health-and-guidance staffing load for this school.
Discipline context
9
in-school suspensions + 8 out-of-school
Suspension rate: 4.0 per 100 students. Combined in-school and out-of-school rate: 7.6 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 224 Top 22% in Illinois — larger than 78% of 3,845 state schools
Teachers (FTE) 17.0
Students per teacher 14:1 -4% vs state
Free-lunch eligible —
NCES ID 173657003764
Student demographics
White 84.8%
Hispanic or Latino 10.7%
Asian 1.8%
African American 1.3%
Two or More 1.3%
Largest group: White at 84.8% of enrollment.
Programs & staff
AP courses offered 6
Counselors (FTE) 1.0
Students per counselor 224:1
Discipline & special education
Chronically absent 13.8%
In-school suspensions 9
Out-of-school suspensions 8
Funding & spending
District-wide per-pupil expenditure for Somonauk Cusd 432, which includes Somonauk High School.
$17,402
Per student
-13%
vs Illinois
Avg $20,099
-11%
vs U.S.
Avg $19,490
Revenue mix
Local 62.5%
State 31.9%
Federal 5.6%
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
- 298
- Students per teacher
- 12.1:1
- Enrollment
- 249
- Students per teacher
- 12.9:1
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 Somonauk High School
How many students attend Somonauk High School?
Somonauk High School has 224 students enrolled. It is a high school in Somonauk, IL.
What is the student-teacher ratio at Somonauk High School?
The student-teacher ratio at Somonauk High School is 14:1, which is 4% lower than the Illinois average of 14.6:1 and 12% lower than the national average of 15.9:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Somonauk High School?
The largest demographic group at Somonauk High School is White at 84.8%. The school serves a diverse student body in Somonauk, IL.
What is the Resource Investment Index for Somonauk High School?
Somonauk High School has a Resource Investment Index of 45/100 (D) 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.