Serving 1,909 students in grades 9-12, Alton High School ranks in the bottom 50% of all schools in Illinois for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 20% (which is lower than the Illinois state average of 28%). The percentage of students achieving proficiency in reading/language arts is 22% (which is lower than the Illinois state average of 30%).
The student:teacher ratio of 18:1 is higher than the Illinois state level of 13:1.
Minority enrollment is 45% of the student body (majority Black), which is lower than the Illinois state average of 55% (majority Hispanic and Black).
Quick Stats (2025)
- Grades: 9-12
- Enrollment: 1,909 students
- Student:Teacher Ratio: 18:1
- Minority Enrollment: 45%
- Graduation Rate: 72% (Btm 50% in IL)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 20% (Top 50%)
- Reading Proficiency: 22% (Btm 50%)
- Science Proficiency: 45% (Btm 50%)
- Source: National Center for Education Statistics (NCES), IL Dept. of Education
School Overview
Alton High School's student population of 1,909 students has stayed relatively flat over five school years.
The teacher population of 109 teachers has declined by 10% over five school years.
Grades Offered
Grades 9-12
Total Students
1,909 students
Gender %
Total Classroom Teachers
109 teachers
Students by Grade
School Calendar
School Rankings
Alton High School ranks within the bottom 50% of all 3,426 schools in Illinois (based off of combined math and reading proficiency testing data).
The diversity score of Alton High School is 0.60, which is less than the diversity score at state average of 0.70. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#1813 out of 3426 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
(20-21)20%
28%
Reading/Language Arts Test Scores (% Proficient)
22%
30%
Science Test Scores (% Proficient)
45%
50%
Student : Teacher Ratio
18:1
13:1
American Indian
n/a
1%
Asian
n/a
6%
Hispanic
5%
28%
Black
29%
16%
White
55%
45%
Hawaiian
n/a
n/a
Two or more races
11%
4%
All Ethnic Groups
Graduation Rate
72%
87%
Eligible for Free Lunch
48%
43%
Eligible for Reduced Lunch (14-15)
1%
2%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), IL Dept. of Education
Profile last updated:
Frequently Asked Questions
What is Alton High School's ranking?
Alton High School is ranked #1813 out of 3,426 schools, which ranks it among the bottom 50% of public schools in Illinois.
What schools are Alton High School often compared to?
Alton High Schoolis often viewed alongside schools like Civic Memorial High School, Edwardsville High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
20% of students have achieved math proficiency (compared to the 28% IL state average), while 22% of students have achieved reading proficiency (compared to the 30% IL state average).
What is the graduation rate of Alton High School?
The graduation rate of Alton High School is 72%, which is lower than the Illinois state average of 87%.
How many students attend Alton High School?
1,909 students attend Alton High School.
What is the racial composition of the student body?
55% of Alton High School students are White, 29% of students are Black, 11% of students are Two or more races, and 5% of students are Hispanic.
What is the student:teacher ratio of Alton High School?
Alton High School has a student ration of 18:1, which is higher than the Illinois state average of 13:1.
What grades does Alton High School offer ?
Alton High School offers enrollment in grades 9-12
What school district is Alton High School part of?
Alton High School is part of Alton CUSD 11 School District.
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