Enrollment
260
Illinois · 2024-25 NCES data
Elementary school (grades K-5) · Lockport, IL
Federal NCES profile for Kelvin Grove Jr High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 47/100.
The verdict
Kelvin Grove Jr High School earns 47/100 on the Resource Investment Index, with class sizes near the Illinois median.
Kelvin Grove Jr High School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Kelvin Grove Jr High School ranks #3 of 3 elementary schools in Lockport, IL.
NCES ID 170921000529 Verify on NCES CCD record →
Enrollment
260
Illinois · 2024-25 NCES data
Teachers (FTE)
21.0
Federal CCD staff survey
Students per teacher
12.4:1
vs 14:1 Illinois avg
-11% vs state
How Kelvin Grove Jr High School compares with Illinois and U.S. medians
At or below state median
12.4:1 - 1.6 below the Illinois state median of 14:1, indicating smaller average class loads than typical schools in the state.
Kelvin Grove Jr High School is a mid-sized elementary school in Lockport, Illinois, enrolling 260 students.
Class sizes run a bit leaner than typical: 12.4:1 puts it in the smaller third of Illinois schools by student-teacher ratio.
Enrollment of 260 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 led by White (77%) and Hispanic or Latino (16%) (diversity index 38/100).
Counselor coverage runs a bit thin, about 260 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 32.3% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The federal civil-rights collection also records 1 expulsion at this campus for 2021-22.
Among Lockport's elementary schools, it stands alongside William J Butler School (557 students): Kelvin Grove Jr High School is smaller than that campus by headcount and runs leaner classes (12.4:1 vs 16.9:1).
Its district, Lockport Sd 91, also runs Milne Grove Elem School (233 students).
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
Kelvin Grove Jr High 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 | 12.4:1 | ▼ 11% | 14:1 | 15.7:1 |
| Enrollment | 260 | top 71% | - | - |
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 76.9% of enrollment.
Simpson diversity index - at 38.0, Kelvin Grove Jr High School is about as mixed as the Illinois school average of 38.9.
District-wide per-pupil expenditure for Lockport Sd 91, which includes Kelvin Grove Jr High 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 |
|---|---|---|---|
| Milne Grove Elem School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Kelvin Grove Jr High School's own figures; each column derives from NCES Common Core of Data.
2 comparable elementary schools (grades K-5) serving the same city.
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 Kelvin Grove Jr High 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.
Kelvin Grove Jr High School has 260 students enrolled. It is an elementary school in Lockport, IL.
The student-teacher ratio at Kelvin Grove Jr High School is 12.4:1, which is 11% lower than the Illinois average of 14:1 and 21% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
The largest demographic group at Kelvin Grove Jr High School is White at 76.9% of enrollment, in Lockport, IL.
Kelvin Grove Jr High School has a Resource Investment Index of 47/100 (typical 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, Kelvin Grove Jr High School ranks #3 of 3 elementary schools in Lockport, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Lockport on the city page.
Kelvin Grove Jr High School earns 47/100 on the Resource Investment Index, with class sizes near the Illinois median. 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 Kelvin Grove Jr High School, Lockport Sd 91 also operates Milne Grove Elem School (233 students). See the Lockport Sd 91 district page for the complete list.
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.
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PlainSchools, “Kelvin Grove Jr High School, Lockport IL.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/kelvin-grove-jr-high-school-il
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