Enrollment
445
Illinois · 2024-25 NCES data
High school (grades 9-12) · Monmouth, IL
Federal NCES profile for United High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 28/100.
The verdict
United High School earns 28/100 on the Resource Investment Index, with class sizes larger than 97% of Illinois schools.
United High School has class sizes larger than 97% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, United High School ranks #6 of 7 public schools in Monmouth, IL.
NCES ID 170032105608 Verify on NCES CCD record →
Enrollment
445
Illinois · 2024-25 NCES data
Teachers (FTE)
21.0
Federal CCD staff survey
Students per teacher
21.2:1
vs 14:1 Illinois avg
+51% vs state
How United High School compares with Illinois and U.S. medians
Larger classes than state median
21.2:1 - 7.2 above the Illinois state median of 14:1, indicating larger average class loads than typical schools in the state.
United High School is a mid-sized high school in Monmouth, Illinois, enrolling 445 students.
Class loads run heavy: 21.2:1 is larger than about 97% of Illinois schools and 51% above the 14:1 state mean, so each teacher carries more students than is typical.
With 445 students, its enrollment sits close to the Illinois median campus size.
Its Resource Investment Index lands in the lower third of 3,845 scored Illinois schools.
Its student body is predominantly White (89% of enrollment) (diversity index 20/100).
No Advanced Placement courses are reported for this campus in the federal data.
Attendance runs somewhat below the norm, with 18.0% of students chronically absent per the 2021-22 civil-rights collection.
Among Monmouth's high schools, it stands alongside Monmouth-Roseville High Sch (483 students): United High School is smaller than that campus by headcount and runs heavier classes (21.2:1 vs 14.2:1).
United Cusd 304 also operates United Jr High Sch (210 students) and United Elem Sch - North (186 students) alongside United 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
United 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 | 21.2:1 | ▲ 51% | 14:1 | 15.7:1 |
| Enrollment | 445 | top 38% | - | - |
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 89.4% of enrollment.
Simpson diversity index - at 19.7, United High School is less mixed than the Illinois school average of 38.9.
District-wide per-pupil expenditure for United Cusd 304, which includes United 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 |
|---|---|---|---|
| United Jr High Sch | Smaller | No free-lunch data | Lower S:T ratio |
| United Elem Sch - North | Smaller | No free-lunch data | Lower S:T ratio |
| United Elem Sch - West | Smaller | No free-lunch data | Lower S:T ratio |
Comparisons are relative to United High School's own figures; each column derives from NCES Common Core of Data.
1 comparable high schools (grades 9-12) 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 United 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.
United High School has 445 students enrolled. It is a high school in Monmouth, IL.
The student-teacher ratio at United High School is 21.2:1, which is 51% higher than the Illinois average of 14:1 and 35% higher than the national average of 15.7:1.
The largest demographic group at United High School is White at 89.4% of enrollment, in Monmouth, IL.
United High School has a Resource Investment Index of 28/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
By Resource Investment Index, United High School ranks #6 of 7 public schools in Monmouth, 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 Monmouth on the city page.
United High School earns 28/100 on the Resource Investment Index, with class sizes larger than 97% 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 United High School, United Cusd 304 also operates United Jr High Sch (210 students), United Elem Sch - North (186 students), and United Elem Sch - West (179 students). See the United Cusd 304 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, “United High School, Monmouth 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/united-high-school-il
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