Enrollment
1,050
Illinois · 2024-25 NCES data
High school (grades 9-12) · Mahomet, IL
Mahomet-Seymour High School
Federal NCES profile for Mahomet-Seymour High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 33/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 172406002627
👥 S:T ratio 36
📚 AP courses 45
🌟 Gifted program 30
🎓 Counselors 48
📋 Attendance 9
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mahomet-Seymour High School earns 33/100 on the Resource Investment Index, with class sizes larger than 82% of Illinois schools.
- #3 of 4
- public schools in Mahomet · Resource Index
- 33
- Resource Index · Typical
- 16.1:1
- large classes for Illinois
- 1,050
- students enrolled
Mahomet-Seymour High School has class sizes larger than 82% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Mahomet-Seymour High School ranks #3 of 4 public schools in Mahomet, IL.
School address
District: Mahomet-Seymour Cusd 3 · Illinois
NCES ID 172406002627 Verify on NCES CCD record →
Teachers (FTE)
62.0
Federal CCD staff survey
Students per teacher
16.1:1
vs 14:1 Illinois avg
+15% vs state
Student-teacher ratio in context
How Mahomet-Seymour High School compares with Illinois and U.S. medians
What stands out at Mahomet-Seymour High School
Mahomet-Seymour High School is a large high school in Mahomet, Illinois, enrolling 1,050 students.
Class loads run somewhat heavier than typical: 16.1:1 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 93% of state schools at 1,050 students.
Its Resource Investment Index lands in the lower third of 3,845 scored Illinois schools.
Its student body is predominantly White (81% of enrollment) (diversity index 33/100).
On the academic-pipeline side it reports 9 Advanced Placement courses.
Counselor coverage runs a bit thin, about 263 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 36.5% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Mahomet-Seymour Cusd 3 spends $9,591 per pupil, 44% below the Illinois average, a leaner-resourced district than most.
Mahomet-Seymour Cusd 3 also operates Mahomet-Seymour Jr High School (812 students) and Middletown Prairie Elementary (805 students) alongside Mahomet-Seymour 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
How Mahomet-Seymour High School compares
Mahomet-Seymour 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 | 16.1:1 | ▲ 15% | 14:1 | 15.7:1 |
| Enrollment | 1,050 | top 7% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.1:1
Leaner classes than 38% of US schools, a middle-of-the-pack class size.
1,050
Bigger than 92% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
16.1:1
students per teacher
- 15% above state mean
Top 82% in Illinois - lower ratio than 18% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
36.5%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$9,591
per pupil, district-wide
- below Illinois avg of $17,042
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors4.0 FTE
Per 263 students, the combined health-and-guidance staffing load for this school.
Discipline context
36
in-school suspensions + 35 out-of-school
Suspension rate: 3.4 per 100 students. Combined in-school and out-of-school rate: 6.8 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 1,050 Top 7% in Illinois - larger than 93% of 3,845 state schools
Teachers (FTE) 62.0
Students per teacher 16.1:1 +15% vs state
Free-lunch eligible -
NCES ID 172406002627
Student demographics
White 81.1%
Two or More 6.5%
Hispanic or Latino 6.4%
Asian 3.9%
African American 1.8%
American Indian / Alaska Native 0.3%
Largest group: White at 81.1% of enrollment.
Student-body diversity index 33.2/100
Simpson diversity index - at 33.2, Mahomet-Seymour High School is less mixed than the Illinois school average of 38.9.
Programs & staff
AP courses offered 9
Counselors (FTE) 4.0
Students per counselor 263:1
Discipline & special education
Chronically absent 36.5%
In-school suspensions 36
Out-of-school suspensions 35
Funding & spending
District-wide per-pupil expenditure for Mahomet-Seymour Cusd 3, which includes Mahomet-Seymour High School.
$9,591
Per student
-44%
vs Illinois
Avg $17,042
-42%
vs U.S.
Avg $16,593
Revenue mix
Local 55.3%
State 32.7%
Federal 12.0%
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.
How Mahomet-Seymour High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Mahomet-Seymour Jr High School | Similar size | No free-lunch data | Higher S:T ratio |
| Middletown Prairie Elementary | Similar size | No free-lunch data | Similar S:T ratio |
| Lincoln Trail Elem School | Similar size | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Mahomet-Seymour High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 812
- Students per teacher
- 18:1
- Resource Index
- 25/100
- Enrollment
- 805
- Students per teacher
- 15.3:1
- Resource Index
- 45/100
- Enrollment
- 801
- Students per teacher
- 20.3:1
- Resource Index
- 38/100
Next steps
Verify locally before acting on Mahomet-Seymour High School's federal record.
- Compare Mahomet-Seymour High School against another school. Compare schools
- Mahomet-Seymour Cusd 3's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
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.
Frequently asked questions about Mahomet-Seymour High School
How many students attend Mahomet-Seymour High School?
Mahomet-Seymour High School has 1,050 students enrolled. It is a high school in Mahomet, IL.
What is the student-teacher ratio at Mahomet-Seymour High School?
The student-teacher ratio at Mahomet-Seymour High School is 16.1:1, which is 15% higher than the Illinois average of 14:1 and 3% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Mahomet-Seymour High School?
The largest demographic group at Mahomet-Seymour High School is White at 81.1% of enrollment, in Mahomet, IL.
What is the Resource Investment Index for Mahomet-Seymour High School?
Mahomet-Seymour High School has a Resource Investment Index of 33/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Mahomet-Seymour High School rank among public schools in Mahomet?
By Resource Investment Index, Mahomet-Seymour High School ranks #3 of 4 public schools in Mahomet, 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 Mahomet on the city page.
Is Mahomet-Seymour High School a good school?
Mahomet-Seymour High School earns 33/100 on the Resource Investment Index, with class sizes larger than 82% 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.
What other schools are in Mahomet-Seymour Cusd 3?
Besides Mahomet-Seymour High School, Mahomet-Seymour Cusd 3 also operates Mahomet-Seymour Jr High School (812 students), Middletown Prairie Elementary (805 students), and Lincoln Trail Elem School (801 students). See the Mahomet-Seymour Cusd 3 district page for the complete list.