Enrollment
812
Illinois · 2024-25 NCES data
2024-25 NCES data Middle school (grades 6-8) NCES 170414000105
South Middle School — Arlington Heights, IL
Federal NCES profile for South Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators — composite Resource Quality Score 49/100.
School address
District: Arlington Heights Sd 25 · 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)
67.0
Federal CCD staff survey
Students per teacher
12.7:1
vs 14.6:1 Illinois avg
-13% vs state
Student-teacher ratio in context
How South Middle School compares with Illinois and U.S. medians
What this school's NCES data tells you
South Middle School reports 812 enrolled students to the National Center for Education Statistics (NCES) alongside 67.0 full-time-equivalent teachers, producing a 12.7:1 student-teacher ratio. That figure sits 13% 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 20% lower, a useful calibration for families comparing districts across state lines.
Chronic absenteeism — missing 10% or more of school days — stands at 13.3% according to the 2021-22 Civil Rights Data Collection.
On the finance side, the surrounding Arlington Heights Sd 25 spends $19,300 per pupil district-wide, below the Illinois average of $20,099 and below the national average of $19,490. Revenue comes 69.9% from local sources (property taxes), 24.8% from the state, and 5.3% from federal programs per the NCES F-33 finance survey. Taken together, these measurements produce a composite Resource Quality Grade of D (49/100), calculated from 3 distinct NCES and CRDC indicators.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How South Middle 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 | Illinois avg | U.S. avg |
|---|---|---|---|
| Students per teacher | 12.7:1 | 14.6:1 | 15.9:1 |
| Enrollment (students) | 812 | — | — |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
Overview
Enrollment 812
Teachers (FTE) 67.0
Students per teacher 12.7:1 -13% vs state
Free-lunch eligible —
NCES ID 170414000105
Student demographics
White 83.6%
Hispanic or Latino 9.0%
Asian 6.2%
African American 1.0%
Native Hawaiian / Pacific Islander 0.1%
Two or More 0.1%
Largest group: White at 83.6% of enrollment.
Programs & staff
Counselors (FTE) 0.0
Discipline & special education
Chronically absent 13.3%
In-school suspensions 17
Out-of-school suspensions 9
Funding & spending
District-wide per-pupil expenditure for Arlington Heights Sd 25, which includes South Middle School.
$19,300
Per student
-4%
vs Illinois
Avg $20,099
-1%
vs U.S.
Avg $19,490
Revenue mix
Local 69.9%
State 24.8%
Federal 5.3%
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.
Other Schools in This District
- Enrollment
- 1,024
- Students per teacher
- 13.3:1
- Enrollment
- 671
- Students per teacher
- 16:1
- Enrollment
- 633
- Students per teacher
- 12.5:1
- Enrollment
- 593
- Students per teacher
- 16.1:1
- Enrollment
- 521
- Students per teacher
- 15.6:1
Similar middle schools in Arlington Heights
1 comparable middle schools (grades 6-8) 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 South Middle School
How many students attend South Middle School?
South Middle School has 812 students enrolled. It is a middle school in Arlington Heights, IL.
What is the student-teacher ratio at South Middle School?
The student-teacher ratio at South Middle School is 12.7:1, which is 13% lower than the Illinois average of 14.6:1 and 20% 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 South Middle School?
The largest demographic group at South Middle School is White at 83.6%. The school serves a diverse student body in Arlington Heights, IL.
What is the quality grade for South Middle School?
South Middle School receives a Resource Quality Grade of D (49/100) based on 3 factors: student-teacher ratio, attendance rates. This grade reflects available federal resource indicators, not standardized test scores.
Related data sources
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