Top Rankings
Community High School District 99 ranks among the top 20% of public school district in Illinois for:
Category
Attribute
Overall Rank
Highest overall rank (Top 20%)
Math Proficiency
Highest math proficiency (Top 20%)
Graduation Rate
Highest graduation rate (Top 10%)
Community Size
Largest student body (number of students) (Top 1%)
For the 2025-26 school year, there are 2 public schools serving 4,708 students in Community High School District 99. This district's average testing ranking is 9/10, which is in the top 20% of public schools in Illinois.
Public Schools in Community High School District 99 have an average math proficiency score of 45% (versus the Illinois public school average of 27%), and reading proficiency score of 41% (versus the 30% statewide average).
Minority enrollment is 38% of the student body (majority Hispanic), which is less than the Illinois public school average of 55% (majority Hispanic).
Overview
This School District
This State (IL)
# Schools
2 Schools
4,394 Schools
# Students
4,708 Students
1,845,459 Students
# Teachers
331 Teachers
136,638 Teachers
Student-Teacher Ratio
14:1
14:1
Student By Grade
District Rank
Community High School District 99, which is ranked within the top 20% of all 864 school districts in Illinois (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
The school district's graduation rate of 93% has stayed relatively flat over five school years.
Overall District Rank
#148 out of 865 school districts
(Top 20%)
(Top 20%)
Math Test Scores (% Proficient)
45%
27%
Reading/Language Arts Test Scores (% Proficient)
41%
30%
Science Test Scores (% Proficient)
63%
50%
Graduation Rate
93%
87%
Students by Ethnicity:
Diversity Score
0.58
0.69
% American Indian
n/a
n/a
% Asian
7%
6%
% Hispanic
19%
28%
% Black
8%
17%
% White
62%
45%
% Hawaiian
n/a
n/a
% Two or more races
4%
4%
All Ethnic Groups
District Revenue and Spending
The revenue/student of $27,907 is higher than the state median of $22,423. The school district revenue/student has grown by 6% over four school years.
The school district's spending/student of $37,915 is higher than the state median of $21,662. The school district spending/student has grown by 6% over four school years.
Total Revenue
$131 MM
$41,381 MM
Spending
$179 MM
$39,976 MM
Revenue / Student
$27,907
$22,423
Spending / Student
$37,915
$21,662
Best Community High School District 99 Public Schools (2025-26)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Community H S Dist 99 - North High School
(Math: 48% | Reading: 49%)
Rank:
Rank:
9/
Top 20%10
4436 Main St
Downers Grove, IL 60515
(630) 795-8401
Downers Grove, IL 60515
(630) 795-8401
Gr: 9-12 | 2,104 students Student-teacher ratio: 14:1 Minority enrollment: 31%
Rank: #22.
Community H S Dist 99 - South High School
(Math: 43% | Reading: 34%)
Rank:
Rank:
8/
Top 30%10
1436 Norfolk St
Downers Grove, IL 60516
(630) 795-8501
Downers Grove, IL 60516
(630) 795-8501
Gr: 9-12 | 2,604 students Student-teacher ratio: 15:1 Minority enrollment: 45%
Frequently Asked Questions
How many schools belong to Community High School District 99?
Community High School District 99 manages 2 public schools serving 4,708 students.
What is the rank of Community High School District 99?
Community High School District 99 is ranked #153 out of 864 school districts in Illinois (top 20%) based off of combined math and reading proficiency testing data for the 2022-2023 school year. This district ranks in the top 20% of Illinois school districts for: Highest overall rank (Top 20%), Highest math proficiency (Top 20%), Highest graduation rate (Top 10%) and Largest student body (number of students) (Top 1%)
What is the racial composition of students in Community High School District 99?
62% of Community High School District 99 students are White, 19% of students are Hispanic, 8% of students are Black, 7% of students are Asian, and 4% of students are Two or more races.
What is the student/teacher ratio of Community High School District 99?
Community High School District 99 has a student/teacher ratio of 14:1, which is equal to the Illinois state average of 14:1.
What is Community High School District 99's spending/student ratio?
The school district's spending/student of $37,915 is higher than the state median of $21,662. The school district spending/student has grown by 6% over four school years.
Recent Articles

2025 Classroom Size Trends: Are Classes Still Growing?
A 2025 update on U.S. classroom sizes, policy battles, student outcomes, and whether class sizes continue to expand.

Personalized Learning in 2025: Revolutionizing Education
Explore how personalized learning is reshaping education in 2025—insights, policy, impact, and real-world models for students, parents, and educators.

How Bullying Impacts Student Academic Performance in 2025
Explore how bullying harms student achievement, attendance, and well-being — and strategies schools use in 2025 to mitigate its effects.