Plainfield South High School, or PSHS, is a four-year public high school located in Plainfield, Illinois, a southwest suburb of Chicago, Illinois, in the United States.
Serving 2,323 students in grades 9-12, Plainfield South High School ranks in the top 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 23% (which is lower than the Illinois state average of 27%). The percentage of students achieving proficiency in reading/language arts is 24% (which is lower than the Illinois state average of 30%).
The student-teacher ratio of 17:1 is higher than the Illinois state level of 13:1.
Minority enrollment is 58% of the student body (majority Hispanic), which is higher than the Illinois state average of 55% (majority Hispanic).
Quick Facts (26-27)
- Grades: 9-12
- Enrollment: 2,323 students
- Student-Teacher Ratio: 17:1
- Minority Enrollment: 58%
- Graduation Rate: 90% (Top 50% in IL)
- Overall Testing Rank: Top 50%
- Math Proficiency: 23% (Top 50%)
- Reading Proficiency: 24% (Btm 50%)
- Science Proficiency: 60% (Top 50%)
- Attendance Zone: Plainfield South High School serves the southwest area of Plainfield, IL, encompassing approximately 12.8 square miles. Most families can expect a 5-10 minute drive to the school, with the farthest edge of the zone located about 3.9 miles away.
- Source: National Center for Education Statistics (NCES), IL Dept. of Education
School Overview
Plainfield South High School's student population of 2,323 students has stayed relatively flat over five school years.
The teacher population of 137 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
Total Students
2,323 students
Showing 2016–2025. Full 24-year historical data available below ↓
Total Classroom Teachers
137 teachers
Showing 2015–2025. Full 24-year historical data available below ↓
Year Founded
2001
School Calendar
School Motto
We Are ... PLAINFIELD SOUTH!
School Rankings
Plainfield South High School ranks within the top 50% of all 3,542 schools in Illinois (based off of combined math and reading proficiency testing data).
The diversity score of Plainfield South High School is 0.69, 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
#1770 out of 3542 schools
(Top 50%)
(Top 50%)
Showing 2013–2023. Full 14-year historical data available below ↓
Math Test Scores (% Proficient)
23%
27%
Showing 2012–2023. Full 14-year historical data available below ↓
Reading/Language Arts Test Scores (% Proficient)
24%
30%
Showing 2012–2022. Full 13-year historical data available below ↓
Science Test Scores (% Proficient)
60%
50%
Student-Teacher Ratio
17:1
13:1
Showing 2015–2025. Full 24-year historical data available below ↓
Asian
3%
6%
Showing 2016–2025. Full 24-year historical data available below ↓
Hispanic
31%
29%
Showing 2016–2025. Full 24-year historical data available below ↓
Black
20%
16%
Showing 2016–2025. Full 24-year historical data available below ↓
White
42%
45%
Showing 2016–2025. Full 24-year historical data available below ↓
Two or more races
4%
4%
Showing 2016–2025. Full 15-year historical data available below ↓
All Ethnic Groups
Showing 2016–2025. Full 24-year historical data available below ↓
Graduation Rate
90%
87.6%
Chronically Absent Students
(22-23)35.3%
29.7%
Eligible for Free Lunch
21%
43%
Showing 2015–2025. Full 15-year historical data available below ↓
Eligible for Reduced Lunch
10%
4%
School Statewide Testing
School District Name
Sports
Colors
Cougar Blue and Gold
School Mascot
Cougar
Source: National Center for Education Statistics (NCES), IL Dept. of Education
Frequently Asked Questions
What is Plainfield South High School's ranking?
Plainfield South High School is ranked #1770 out of 3,542 schools, which ranks it among the top 50% of public schools in Illinois.
What schools are Plainfield South High School often compared to?
Plainfield South High Schoolis often viewed alongside schools like Plainfield North High School, Joliet West High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
23% of students have achieved math proficiency (compared to the 27% IL state average), while 24% of students have achieved reading proficiency (compared to the 30% IL state average).
What is the graduation rate of Plainfield South High School?
The graduation rate of Plainfield South High School is 90%, which is higher than the Illinois state average of 87.6%.
How many students attend Plainfield South High School?
2,323 students attend Plainfield South High School.
What is the racial composition of the student body?
42% of Plainfield South High School students are White, 31% of students are Hispanic, 20% of students are Black, 4% of students are Two or more races, and 3% of students are Asian.
What is the student-teacher ratio of Plainfield South High School?
Plainfield South High School has a student ration of 17:1, which is higher than the Illinois state average of 13:1.
What grades does Plainfield South High School offer ?
Plainfield South High School offers enrollment in grades 9-12
What school district is Plainfield South High School part of?
Plainfield South High School is part of Plainfield SD 202 School District.
School Reviews
5 10/10/2025
I think the school has shown great improvement. There is allot more contact with parents through phone and email. As long as you are an involved parent your child will thrive here at Plainfield South. Some teachers are better then others but it is like that anywhere. The principle and assistants are making a huge difference in the school. I think they are bit behind of other states but that starts in Middle school. The ap and honors classes are good and help my kids stay above the rest and they do not get bored. It all begins with the parents at home!!!
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