- Enrollment
- 1,220
- Students per teacher
- 13.1:1
- Resource Index
- 39/100
High school (grades 9-12) · Alton, IL
Alton High School
Federal NCES profile for Alton High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 38/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 170360000035
👥 S:T ratio 36
🌟 Gifted program 70
🎓 Counselors 9
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Alton High School earns 38/100 on the Resource Investment Index, with class sizes larger than 80% of Illinois schools. It is also one of the largest schools in Illinois.
- #3 of 6
- public schools in Alton · Resource Index
- 38
- Resource Index · Typical
- 16.1:1
- large classes for Illinois
- 1,823
- students enrolled
Alton High School has class sizes larger than 80% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Alton High School ranks #3 of 6 public schools in Alton, IL.
School address
CCD year-over-year · 2022-23 → 2023-24
-81 students YoY
Alton High School held near 1,909 students from 2022-23 to 2023-24 (-81 headcount).
Teacher FTE lost 113.0 → 109.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-81 students YoY 170360000035 · Alton, IL High · MID · TRAD
1,823 enr · 16.1:1 · RII 38
Nearest enrollment peer: Alton Middle School (1,220 students)
Alton High School held near 1,909 students from 2022-23 to 2023-24 (-81 headcount). Teacher FTE lost 113.0 → 109.0 across the same CCD years. Read with this school → · District book → · Illinois schools → · Find another →
Alton High School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- This school
Alton High School
1,823 students
- Alton Middle S
Alton Middle School
1,220 students
- North Elementa 549
North Elementary School
549 students
- East Elementar 415
East Elementary School
415 students
- West Elementar 407
West Elementary School
407 students
- Lewis & Clark 251
Lewis & Clark Elem School
251 students
What this shows Alton High School reports 1,823 students on the CCD universe file.
How Alton High School compares
Alton High School held steady on CCD headcount: ratios and free-lunch share vs 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 | 1,823 | top 3% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
16.1:1
Leaner classes than 37% of US schools, a middle-of-the-pack class size.
1,823
Bigger than 98% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Staffing depth
16.1:1
students per teacher
- 15% above state mean
Top 80% in Illinois - lower ratio than 20% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Funding equity
$16,310
per pupil, district-wide
- below Illinois avg of $18,196
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors4.0 FTE
Per 456 students, the combined health-and-guidance staffing load for this school.
Discipline context
298
in-school suspensions + 218 out-of-school
Suspension rate: 16.3 per 100 students. Combined in-school and out-of-school rate: 28.3 per 100 students. Reported via the Civil Rights Data Collection. Includes 13 expulsions.
Student demographics
White 54.1%
African American 28.4%
Two or More 11.1%
Hispanic or Latino 5.8%
Asian 0.4%
American Indian / Alaska Native 0.1%
Native Hawaiian / Pacific Islander 0.1%
Largest group: White at 54.1% of enrollment.
Student-body diversity index 61.1/100
Simpson diversity index - at 61.1, Alton High School is more mixed than the Illinois school average of 38.9.
Programs
AP courses offered 27
Gifted & talented Yes
District finance for Alton Cusd 11 reports $16,310 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Alton High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Alton Middle School | Smaller | No free-lunch data | Lower S:T ratio |
| North Elementary School | Smaller | No free-lunch data | Similar S:T ratio |
| East Elementary School | Smaller | No free-lunch data | Lower S:T ratio |
| West Elementary School | Smaller | No free-lunch data | Lower S:T ratio |
| Lewis & Clark Elem School | Smaller | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Alton High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 549
- Students per teacher
- 15.3:1
- Resource Index
- 23/100
- Enrollment
- 415
- Students per teacher
- 13.4:1
- Resource Index
- 25/100
- Enrollment
- 407
- Students per teacher
- 13.6:1
- Resource Index
- 39/100
- Enrollment
- 251
- Students per teacher
- 12.6:1
- Resource Index
- 27/100
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 (~1,823 students)
Similar student-teacher ratio (~16.1:1)
Frequently asked questions about Alton High School
How many students attend Alton High School?
Alton High School has 1,823 students enrolled. It is a high school in Alton, IL. CCD year-over-year: 1,990 (2022-23) → 1,909 (2023-24), nearly flat (-81).
What is the student-teacher ratio at Alton High School?
The student-teacher ratio at Alton 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 Alton High School?
The largest demographic group at Alton High School is White at 54.1% of enrollment, in Alton, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 61.1/100.
What is the Resource Investment Index for Alton High School?
Alton High School has a Resource Investment Index of 38/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, gifted-program reporting, counselor availability. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Alton High School rank among public schools in Alton?
By Resource Investment Index, Alton High School ranks #3 of 6 public schools in Alton, 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 Alton on the city page.
What other schools are in Alton Cusd 11?
Besides Alton High School, Alton Cusd 11 also operates Alton Middle School (1,220 students), North Elementary School (549 students), and East Elementary School (415 students). See the Alton Cusd 11 district page for the complete list.