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Alton High School

Grades 09–12 · Alton, IL · NCES 170360000035

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4200 Humbert Rd · Alton, IL 62002

At a glance

Reported students

1,823

NCES CCD 2024–25

Teachers (FTE)

98.78

NCES CCD 2024–25

Student–teacher ratio

18.5:1

Calculated; not a class-size measure

Grades served

09–12

NCES preliminary directory 2025–26

School benchmarks

Illinois high enrollment

88th percentile

Compared with 965 same-level schools reporting enrollment.

District median enrollment

267

Alton High School: 1,823 reported students.

State peer staffing position

96th percentile

18.5:1 reported; state peer median 12.6:1. Ratio is not class size.

Historical enrollment and staffing · CRDC 2021–22

These older figures are kept separate from 2024–25 statistics and benchmarks. Differences between years can reflect changes in enrollment, staffing, or reporting scope.

Students
1,912
Teachers (FTE)
118
Student–teacher ratio
16.2:1

What the reported data says about Alton High School

Alton High School is a public high school serving grades 09–12 in Alton. It is one of 11 current school records connected to Alton CUSD 11. NCES reports 1,823 students for 2024–25.

Among 965 high schools in Illinois with comparable records, this school is larger than the reported median of 254 students. Its enrollment is at approximately the 88th percentile for that peer group. Size describes the campus, not instructional quality.

The reported student–teacher ratio is 18.5:1, above the Illinois median of 12.6:1 for the same school level. This ratio uses total enrollment and teacher FTE; it is not an average classroom headcount and can be affected by special programs or part-time staffing.

The largest reported race and ethnicity groups are White (54.1%) and Black (28.4%). English learners represent 0.4% of enrollment. Students served under IDEA represent 6.1%. These figures help families understand who the school serves; they are not rating inputs.

The 2021–22 civil-rights collection reports AP student enrollment, gifted and talented programming. The school reported 27 AP courses. Program availability changes, so families should confirm the current catalog and participation rules directly with the school.

Questions worth asking Alton High School

  1. 1How do the reported 18.5:1 student–teacher ratio and 98.78 teacher FTE translate into actual class sizes by grade?
  2. 2Have the reported academic programs changed since the 2021–22 CRDC collection?
  3. 3What counseling support is available today? The school reported 4 counselor FTE in 2021–22.
  4. 4Does community eligibility provide breakfast and lunch to every enrolled student, and are summer meals available?
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Enrollment needs

English learners
0.4%
Students with disabilities
6.1%
Free/reduced-price lunch
43.1%
Lunch program
Yes under Community Eligibility Option (CEO)

Reported support staff

Counselors (FTE)
4
Nurses (FTE)
1
Psychologists (FTE)
1
Social workers (FTE)
4

CRDC 2021–22 full-time-equivalent counts; verify current assignments with the school.

Student demographics

Race and ethnicity share of reported enrollment

  • White54.1%
  • Hispanic5.8%
  • Black28.4%
  • Asian0.4%
  • American Indian / Alaska Native0.1%
  • Native Hawaiian / Pacific Islander0.1%
  • Multiracial11.1%

Race/ethnicity: NCES CCD 2024–25. English learner and disability context: CRDC 2021–22. Lunch eligibility: NCES CCD 2024–25. Privacy rules can produce missing values.

Programs reported by the school

AP student enrollment

Students enrolled

27 distinct courses reported

Gifted and talented

Offered

Computer science

Not reported as offered

CRDC 2021–22: the AP flag records student enrollment; gifted and computer-science fields describe reported programs/classes. Confirm current courses and eligibility with the school.

Other schools in Alton CUSD 11

Start with campuses at the same school level or with similar reported enrollment.

Alton Middle School

Middle · Grades 06–08

1,220 reported students

North Elementary School

Elementary · Grades 02–05

549 reported students

East Elementary School

Elementary · Grades 03–05

415 reported students

West Elementary School

Elementary · Grades 02–05

407 reported students

Early Childhood

Other · Grades PK–PK

267 reported students

Lewis & Clark Elem School

Elementary · Grades KG–01

251 reported students

View all 11 district schools →