Enrollment
754
Illinois · 2024-25 NCES data
Middle school (grades 6-8) · Belvidere, IL
Federal NCES profile for Belvidere South Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 28/100.
The verdict
Belvidere South Middle School earns 28/100 on the Resource Investment Index, even as it posts class sizes smaller than 85% of Illinois schools.
Belvidere South Middle School has class sizes smaller than 85% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Belvidere South Middle School ranks #7 of 9 public schools in Belvidere, IL.
NCES ID 170579000256 Verify on NCES CCD record →
Enrollment
754
Illinois · 2024-25 NCES data
Teachers (FTE)
72.0
Federal CCD staff survey
Students per teacher
10.8:1
vs 14:1 Illinois avg
-23% vs state
How Belvidere South Middle School compares with Illinois and U.S. medians
Smaller classes than state median
10.8:1 - 3.2 below the Illinois state median of 14:1, indicating smaller average class loads than typical schools in the state.
Belvidere South Middle School is a large middle school in Belvidere, Illinois, enrolling 754 students.
Classes run notably small here: at 10.8:1, Belvidere South Middle School is leaner than roughly 85% of Illinois schools and 23% under the state's 14:1 norm, more adult attention per pupil than most peers.
Enrollment of 754 puts it in the larger third of Illinois schools by headcount.
Its Resource Investment Index lands in the lower third of 3,845 scored Illinois schools.
Its student body is led by Hispanic or Latino (58%) and White (35%) (diversity index 55/100).
Counselor availability sits well past the ASCA benchmark, roughly 377 students sharing each counselor, though short of the most stretched campuses.
Chronic absenteeism is elevated: 44.0% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Belvidere's middle schools, it stands alongside Belvidere Central Middle School (911 students): Belvidere South Middle School is smaller than that campus by headcount and runs leaner classes (10.8:1 vs 12.1:1).
Belvidere Cusd 100 also operates Belvidere North High Sch (1,354 students) and Belvidere High School (1,167 students) alongside Belvidere South Middle School.
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
Belvidere South Middle School on the metrics families compare, against Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 10.8:1 | ▼ 23% | 14:1 | 15.7:1 |
| Enrollment | 754 | top 12% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
Largest group: Hispanic or Latino at 57.7% of enrollment.
Simpson diversity index - at 54.6, Belvidere South Middle School is more mixed than the Illinois school average of 38.9.
District-wide per-pupil expenditure for Belvidere Cusd 100, which includes Belvidere South Middle School.
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.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Belvidere North High Sch | Larger | No free-lunch data | Higher S:T ratio |
| Belvidere High School | Larger | No free-lunch data | Higher S:T ratio |
| Belvidere Central Middle School | Similar size | No free-lunch data | Similar S:T ratio |
| Washington Academy | Similar size | No free-lunch data | Higher S:T ratio |
| Meehan Elementary School | Similar size | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Belvidere South Middle School's own figures; each column derives from NCES Common Core of Data.
1 comparable middle schools (grades 6-8) serving the same city.
Next steps
Verify locally before acting on Belvidere South Middle School's federal record.
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.
Belvidere South Middle School has 754 students enrolled. It is a middle school in Belvidere, IL.
The student-teacher ratio at Belvidere South Middle School is 10.8:1, which is 23% lower than the Illinois average of 14:1 and 31% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
The largest demographic group at Belvidere South Middle School is Hispanic or Latino at 57.7% of enrollment, in Belvidere, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 54.6/100.
Belvidere South Middle School has a Resource Investment Index of 28/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
By Resource Investment Index, Belvidere South Middle School ranks #7 of 9 public schools in Belvidere, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Belvidere on the city page.
Belvidere South Middle School earns 28/100 on the Resource Investment Index, even as it posts class sizes smaller than 85% of Illinois schools. 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.
Besides Belvidere South Middle School, Belvidere Cusd 100 also operates Belvidere North High Sch (1,354 students), Belvidere High School (1,167 students), and Belvidere Central Middle School (911 students). See the Belvidere Cusd 100 district page for the complete list.