- Enrollment
- 812
- Students per teacher
- 18:1
- Resource Index
- 25/100
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 30/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 172406002627
👥 S:T ratio 32
🌟 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 30/100 on the Resource Investment Index, with class sizes larger than 87% of Illinois schools.
- #3 of 4
- public schools in Mahomet · Resource Index
- 30
- Resource Index · Lower
- 16.9:1
- large classes for Illinois
- 1,050
- students enrolled
Mahomet-Seymour High School has class sizes larger than 87% 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 →
NCES CCD universe card
School universe 172406002627 · Mahomet, IL High · MID · TRAD
1,050 enr · 16.9:1 · RII 30
Nearest enrollment peer: Mahomet-Seymour Jr High School (812 students)
Resource Investment Index #3 of 4 public schools in Mahomet. NCES Common Core of Data stamps for this campus. Read with this school → · District book → · Illinois schools → · Find another →
Mahomet-Seymour High School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- This school
Mahomet-Seymour High School
1,050 students
- Mahomet-Seymou
Mahomet-Seymour Jr High School
812 students
- Middletown Pra
Middletown Prairie Elementary
805 students
- Lincoln Trail
Lincoln Trail Elem School
801 students
What this shows Mahomet-Seymour High School reports 1,050 students on the CCD universe file.
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 | 16.9:1 | ▲ 21% | 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
16.9:1
Leaner classes than 31% of US schools, heavier class loads than most.
1,050
Bigger than 92% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
16.9:1
students per teacher
- 21% above state mean
Top 87% in Illinois - lower ratio than 13% 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
$9,950
per pupil, district-wide
- below Illinois avg of $18,196
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.
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
AP courses offered 9
Funding & spending
District-wide per-pupil expenditure for Mahomet-Seymour Cusd 3, which includes Mahomet-Seymour High School.
$9,950
Per student
-45%
vs Illinois
Avg $18,196
-44%
vs U.S.
Avg $17,658
Revenue mix
Local 55.3%
State 32.7%
Federal 12.0%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2022-23 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 | Similar S:T ratio |
| Middletown Prairie Elementary | Similar size | No free-lunch data | Lower 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
- 805
- Students per teacher
- 14.9:1
- Resource Index
- 45/100
- Enrollment
- 801
- Students per teacher
- 20.5:1
- Resource Index
- 38/100
Nationwide high schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~1,050 students)
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 16.9:1, which is 21% higher than the Illinois average of 14:1 and 8% 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 30/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. 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.
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.
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, the data changelog, or report a data error. Data current as of August 2026.