Enrollment
1,158
Illinois · 2024-25 NCES data
Other / mixed grade configuration · Galesburg, IL
Federal NCES profile for Galesburg Senior High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 31/100.
The verdict
Galesburg Senior High School earns 31/100 on the Resource Investment Index, with class sizes near the Illinois median.
Galesburg Senior High School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Galesburg Senior High School ranks #2 of 6 public schools in Galesburg, IL.
NCES ID 171608001923 Verify on NCES CCD record →
Enrollment
1,158
Illinois · 2024-25 NCES data
Teachers (FTE)
79.0
Federal CCD staff survey
Students per teacher
14.7:1
vs 14:1 Illinois avg
+5% vs state
How Galesburg Senior High School compares with Illinois and U.S. medians
Slightly above state median
14.7:1 - 0.7 above the Illinois state median of 14:1, indicating larger average class loads than typical schools in the state.
Galesburg Senior High School is a large combined-grade school in Galesburg, Illinois, enrolling 1,158 students.
Class loads run somewhat heavier than typical: 14.7:1 puts it in the larger third of Illinois schools by student-teacher ratio.
By headcount it is one of the larger campuses in Illinois, bigger than 94% of state schools at 1,158 students.
Its Resource Investment Index lands in the lower third of 3,845 scored Illinois schools.
Its student body is led by White (60%) and African American (14%) (diversity index 59/100).
Counselor coverage is strong, about 232 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 46.9% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Discipline events run high: 448 in- and out-of-school suspensions were reported for 1,158 students in the 2021-22 Civil Rights Data Collection.
Among Galesburg's public schools, it stands alongside Bright Futures Pre-K Prog (176 students): Galesburg Senior High School is larger than that campus by headcount and runs leaner classes (14.7:1 vs 17.6:1).
Galesburg Cusd 205 also operates Steele School (542 students) and Lombard Middle School (534 students) alongside Galesburg Senior High 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
Galesburg Senior 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 | 14.7:1 | ▲ 5% | 14:1 | 15.7:1 |
| Enrollment | 1,158 | top 6% | - | - |
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 60.4% of enrollment.
Simpson diversity index - at 58.6, Galesburg Senior High School is more mixed than the Illinois school average of 38.9.
District-wide per-pupil expenditure for Galesburg Cusd 205, which includes Galesburg Senior 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 |
|---|---|---|---|
| Steele School | Smaller | No free-lunch data | Similar S:T ratio |
| Lombard Middle School | Smaller | No free-lunch data | Similar S:T ratio |
| King School | Smaller | No free-lunch data | Similar S:T ratio |
| Silas Willard Elem School | Smaller | No free-lunch data | Lower S:T ratio |
| Bright Futures Pre-K Prog | Smaller | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Galesburg Senior High School's own figures; each column derives from NCES Common Core of Data.
1 comparable other schools (grades Mixed) 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 Galesburg Senior 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.
Galesburg Senior High School has 1,158 students enrolled. It is a public school in Galesburg, IL.
The student-teacher ratio at Galesburg Senior High School is 14.7:1, which is 5% higher than the Illinois average of 14:1 and 6% lower than the national average of 15.7:1.
The largest demographic group at Galesburg Senior High School is White at 60.4% of enrollment, in Galesburg, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 58.6/100.
Galesburg Senior High School has a Resource Investment Index of 31/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
By Resource Investment Index, Galesburg Senior High School ranks #2 of 6 public schools in Galesburg, 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 Galesburg on the city page.
Galesburg Senior High School earns 31/100 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 Galesburg Senior High School, Galesburg Cusd 205 also operates Steele School (542 students), Lombard Middle School (534 students), and King School (510 students). See the Galesburg Cusd 205 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, “Galesburg Senior High School, Galesburg 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/galesburg-senior-high-school-il
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