Enrollment
154
Illinois · 2024-25 NCES data
High school (grades 9-12) · Gardner, IL
Federal NCES profile for Gardner-South Wilmington Twp H S, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 41/100.
The verdict
Gardner-South Wilmington Twp H S earns 41/100 on the Resource Investment Index, with class sizes smaller than 97% of Illinois schools. It is also less racially and ethnically mixed than most Illinois schools.
Gardner-South Wilmington Twp H S has class sizes smaller than 97% of Illinois schools. Computed live against every Illinois school reporting to NCES.
NCES ID 171626001942 Verify on NCES CCD record →
Enrollment
154
Illinois · 2024-25 NCES data
Teachers (FTE)
19.0
Federal CCD staff survey
Students per teacher
8.1:1
vs 14:1 Illinois avg
-42% vs state
How Gardner-South Wilmington Twp H S compares with Illinois and U.S. medians
Gardner-South Wilmington Twp H S is a small high school in Gardner, Illinois, enrolling 154 students.
Classes run notably small here: at 8.1:1, Gardner-South Wilmington Twp H S is leaner than roughly 97% of Illinois schools and 42% under the state's 14:1 norm, more adult attention per pupil than most peers.
Enrollment of 154 puts it in the smaller third of Illinois schools by headcount.
Its Resource Investment Index lands in the upper third of 3,845 scored Illinois schools.
Its student body is predominantly White (93% of enrollment), among the less diverse in the state (diversity index 13/100).
No Advanced Placement courses are reported for this campus in the federal data.
Counselor coverage is strong, about 154 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 29.2% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Gardner S Wilmington Twp Hsd 73 spends $22,442 per pupil, 32% above the Illinois average, a better-resourced district than most.
Gardner S Wilmington Twp Hsd 73 operates only this one school, so Gardner-South Wilmington Twp H S has no district-mates to compare against locally.
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
Gardner-South Wilmington Twp H S on the metrics families compare, against Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 8.1:1 | ▼ 42% | 14:1 | 15.7:1 |
| Enrollment | 154 | top 89% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
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.
Largest group: White at 92.9% of enrollment.
Simpson diversity index - at 13.3, Gardner-South Wilmington Twp H S is less mixed than the Illinois school average of 38.9.
District-wide per-pupil expenditure for Gardner S Wilmington Twp Hsd 73, which includes Gardner-South Wilmington Twp H S.
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.
Matched by enrollment size and by staffing ratio across all of Illinois, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Gardner-South Wilmington Twp H S'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.
Gardner-South Wilmington Twp H S has 154 students enrolled. It is a high school in Gardner, IL.
The student-teacher ratio at Gardner-South Wilmington Twp H S is 8.1:1, which is 42% lower than the Illinois average of 14:1 and 48% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
The largest demographic group at Gardner-South Wilmington Twp H S is White at 92.9% of enrollment, in Gardner, IL.
Gardner-South Wilmington Twp H S has a Resource Investment Index of 41/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
Gardner-South Wilmington Twp H S earns 41/100 on the Resource Investment Index, with class sizes smaller than 97% of Illinois schools. It is also less racially and ethnically mixed than most 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.
None reported; Gardner S Wilmington Twp Hsd 73 operates only Gardner-South Wilmington Twp H S as a public school district in NCES's records.
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.