Enrollment
357
Illinois · 2024-25 NCES data
Elementary school (grades K-5) · Crystal Lake, IL
Federal NCES profile for Prairie Grove Junior High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 48/100.
The verdict
Prairie Grove Junior High School earns 48/100 on the Resource Investment Index, with class sizes smaller than 73% of Illinois schools.
Prairie Grove Junior High School has class sizes smaller than 73% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Prairie Grove Junior High School ranks #9 of 9 elementary schools in Crystal Lake, IL.
NCES ID 173252003735 Verify on NCES CCD record →
Enrollment
357
Illinois · 2024-25 NCES data
Teachers (FTE)
30.0
Federal CCD staff survey
Students per teacher
11.9:1
vs 14:1 Illinois avg
-15% vs state
How Prairie Grove Junior High School compares with Illinois and U.S. medians
Smaller classes than state median
11.9:1 - 2.1 below the Illinois state median of 14:1, indicating smaller average class loads than typical schools in the state.
Prairie Grove Junior High School is a mid-sized elementary school in Crystal Lake, Illinois, enrolling 357 students.
Class sizes run a bit leaner than typical: 11.9:1 puts it in the smaller third of Illinois schools by student-teacher ratio.
With 357 students, its enrollment sits close to the Illinois median campus size.
Its Resource Investment Index lands in the upper third of 3,845 scored Illinois schools.
Its student body is predominantly White (80% of enrollment) (diversity index 34/100).
14.8% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Among Crystal Lake's elementary schools, it stands alongside North Elem School (638 students): Prairie Grove Junior High School is smaller than that campus by headcount and runs leaner classes (11.9:1 vs 13.3:1).
Its district, Prairie Grove Csd 46, also runs Prairie Grove Elem School (552 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
Prairie Grove Junior 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 | 11.9:1 | ▼ 15% | 14:1 | 15.7:1 |
| Enrollment | 357 | top 53% | - | - |
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 80.1% of enrollment.
Simpson diversity index - at 34.3, Prairie Grove Junior High School is less mixed than the Illinois school average of 38.9.
District-wide per-pupil expenditure for Prairie Grove Csd 46, which includes Prairie Grove Junior 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 |
|---|---|---|---|
| Prairie Grove Elem School | Larger | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Prairie Grove Junior High School's own figures; each column derives from NCES Common Core of Data.
6 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 Prairie Grove Junior 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.
Prairie Grove Junior High School has 357 students enrolled. It is an elementary school in Crystal Lake, IL.
The student-teacher ratio at Prairie Grove Junior High School is 11.9:1, which is 15% lower than the Illinois average of 14:1 and 24% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
The largest demographic group at Prairie Grove Junior High School is White at 80.1% of enrollment, in Crystal Lake, IL.
Prairie Grove Junior High School has a Resource Investment Index of 48/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
By Resource Investment Index, Prairie Grove Junior High School ranks #9 of 9 elementary schools in Crystal Lake, 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 Crystal Lake on the city page.
Prairie Grove Junior High School earns 48/100 on the Resource Investment Index, with class sizes smaller than 73% 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 Prairie Grove Junior High School, Prairie Grove Csd 46 also operates Prairie Grove Elem School (552 students). See the Prairie Grove Csd 46 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, “Prairie Grove Junior High School, Crystal Lake 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/prairie-grove-junior-high-school-il
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