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SCHOOL COMMUNITY·ALTON CUSD 11·NCES 170360000035

Alton High School

4200 Humbert Rd, Alton, IL 62002 · (618) 474-2700 · Madison County
GRADES 09–12HIGH23-SUBURBTITLE IREGULAR SCHOOL1,823 STUDENTS
C
allk12 Grade
Scored higher than 27% of Illinois public high schools
  • C+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • C-Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
  • ·Three-year trend Not available for this school, so the grade uses the other parts.

Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Illinois public high schools

Enrollment
1,823
High
DISTRICT 553 · STATE 834
Student : Teacher
18.5:1
99 FTE teachers
DISTRICT 15.9:1 · STATE 13.8:1
Free / Reduced Lunch
43%
785 students
DISTRICT 57% · STATE 56%
Community
5
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 941623%
Grade 1048226%
Grade 1144624%
Grade 1247926%
Student demographics
61%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 64% · STATE 69% · US 70%
White
98654%
DISTRICT 50% · STATE 45% · US 43%
Hispanic
1066%
DISTRICT 5% · STATE 29% · US 30%
Black
51828%
DISTRICT 30% · STATE 16% · US 15%
Asian
80%
DISTRICT 0% · STATE 6% · US 6%
Two+
20211%
DISTRICT 14% · STATE 5% · US 5%
Native American
10%
DISTRICT 0% · STATE 0% · US 1%
Pacific Islander
10%
DISTRICT 0% · STATE 0% · US 0%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
94452%
Female
87848%

School pathway

Feeds from
Alton Middle School06–08
Based on grade levels within Alton CUSD 11. Attendance zones can vary; confirm enrollment with the district.

Discussions

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BeatsExpectations

Demographically-adjusted score · methodology
Tier
UNDERPERFORMING
Bottom 10% of IL schools after controlling for student poverty
Actual proficiency
32.6%
composite math + reading, all grades
Predicted
46.6%
based on IL schools with similar FRL share
Beats by
-14.1pp
below demographic expectation

What this means: About 33% of students here test proficient in math and reading, below the roughly 47% typical for Illinois schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

Schools most like Alton High School

Alton High School's state test result (32.6% proficient) is higher than 1 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Alton High School this school1,82343.1%32.6%
Normal Community West High School
Normal
1,59038.6%38.1%
Bradley-Bourbonnais C High School
Bradley
1,91449.8%37.9%
Marion High School
Marion
1,07548.1%36.6%
Limestone Community High School
Peoria
89849.8%30.4%
Richwoods High School
Peoria
1,68553.2%36.5%
Matched among Illinois high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where Alton High School ranks

Among high schools
MeasureThis schoolIn IllinoisIn Madison County
State test proficiency
ranked highest first
32.6%#316 of 573#6 of 9
Enrollment
ranked largest first
1,823#112 of 708#2 of 9
Students per teacher
ranked fewest first
18.5:1#508 of 528#7 of 8
Diversity index
ranked most diverse first
61.0%#97 of 537#1 of 8
Free and reduced lunch
ranked highest share first
43.1%#373 of 578#5 of 9
Enrollment change since 2017-18
ranked steepest decline first
-9.2%#181 of 358#2 of 7
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
1,823
-200 (-10%) vs 2020
-14% since 1990-91, when it was 2,128
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-251,82398.818.5:143% (785)
2023-241,90910917.5:148% (911)
2022-231,99011317.6:151% (1,023)
2020-212,023N/AN/AN/A
2017-182,00712216.4:146% (929)
2015-161,98711916.7:143% (864)
2010-112,03312716.0:151% (1,042)
2000-012,11510220.7:1N/A
1990-912,12810520.3:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Alton High School.

Since 2017-18: students down 9% (2,007 to 1,823); teachers down 19% (122 to 98.8).

About Alton High School

Alton High School, a large high school, is located in Alton, Illinois. Its 1,823 students are spread across grades 9 through 12. The school's enrollment is 119% larger than the 834 average for high schools in Illinois.

The district, Alton CUSD 11, has 5,526 students enrolled across 10 schools.

Alton High School's enrollment is 54% White. Other groups make up 28% Black, 11% multiracial, and 6% Hispanic. County-wide, 83% of Madison County residents are White. Alton High School has a diversity index of 61%, compared with 70% for all US public school students.

Its teaching staff equals 98.8 full-time positions, a ratio of 18.5:1. For comparison, high schools in Illinois average 13.8:1. Free and reduced-price lunch eligibility, a common measure of family income, is 43%. Across public schools in Madison County, the average is about the same, 46%.

Alton High School is graded C by allk12, scoring above 27% of Illinois public high schools once test results, poverty-adjusted performance, and the recent trend are combined.

When test results are adjusted for free or reduced-price lunch eligibility, Alton High School ranks in the bottom 10% of Illinois schools. It scores 32.6%; the prediction is 46.6%.

Among Madison County residents, median household income is about $75,793, roughly 31% of adults have a four-year degree or more, and about 8% of residents live below the federal poverty line. Federal data list 84 public schools in Madison County, with a combined enrollment of about 35,253.

Eunice Smith Elementary School is the nearest neighboring public school, about 1.9 miles away. A five-mile radius around the school includes at least 8 other public schools. Alton High School ranks 1st of 5 among nearby schools on average proficiency, with 32.6% against a local average of 28.4%.

By NCES locale, the school is Suburb: Small, or in a suburban area outside a principal city, within an urbanized area with a population under 100,000.

From 2020-21 to 2024-25, Alton High School went from 2,023 students to 1,823.

Threads on this page can be about school events, clubs, and volunteer needs. Anyone with firsthand experience at this school can post or comment.

Madison County at a glance

View full county profile
Population
264,238
Census ACS
Median income
$75,793
Household, ACS
Bachelor's+
31%
Adults 25+
Poverty rate
8%
Below federal line
Schools in county
84
35,253 students

Quick facts

School name
Alton High School
District
Alton CUSD 11
Address
4200 Humbert Rd, Alton, IL 62002
Phone
(618) 474-2700
County
Madison County
Level
High
Grade range
09–12
Total enrollment
1,823
Teachers (FTE)
99
Student–teacher ratio
18.5:1
Free and reduced lunch
785 (43%)
Locale
23-Suburb: Small
NCES ID
170360000035
Charter school
No
Virtual school
No

Related schools

Other schools in Alton CUSD 11
Other schools in Alton
Other Alton High schools

One other US public school is named Alton High. Alton High School is the largest of the 2.

Nearby schools

Frequently asked questions

About Alton High School
How many students attend Alton High School?
Alton High School enrolls approximately 1,823 students in grades 09-12.
What age range does Alton High School serve?
Alton High School serves students from grade 09 through grade 12.
How many students per teacher at Alton High School?
Approximately 18.5:1 students per teacher at Alton High School.
How diverse is Alton High School?
Alton High School reports a student body of 54% White, 6% Hispanic, 28% Black, 0% Asian, 11% Two or more.
Who oversees Alton High School?
Alton High School is overseen by Alton CUSD 11 in Madison County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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Alton High School · Reviews, news, discussion (Alton, IL) · allk12