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Oswego High School

4250 State Route 71, Oswego, IL 60543

BSchola Grade
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Grades
9–12
High
Students
2,870
Enrolled 2024–25
Students per teacher
15.8 : 1
Full-time teachers
District
CUSD 308
Kendall County

Schola Grade B · Above average

Letter grade (A–F) · compared with 684 Illinois high schools · How we grade
Test scores33% proficient in math & reading
76thpercentile
Equity17% of low-income students proficient
71stpercentile
Attendance38% chronically absent
31stpercentile
Graduation rate93% graduate in 4 years
74thpercentile
College readinessAt least 27% take AP, IB or dual-enrollment courses
66thpercentile
Class size15.8 students per teacher
22ndpercentile

Percentiles compare this school with other Illinois high schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).

About Oswego High School

Oswego High School is a public high school in Oswego, Illinois, serving grades 9–12. It is part of CUSD 308. The school is located in a large suburb in Kendall County.

In the 2024–25 school year, 2,870 students were enrolled, with about 15.8 students for every full-time teacher. That ratio is larger than the typical Illinois high school (13.3 students per teacher). Its Schola Grade is B (above average), compared with 684 Illinois high schools.

Grades & enrollment

Students per grade, 2024–25Grades 9–12

Location & nearby schools

4250 State Route 71
Oswego, IL 60543
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School details

Type
Public School · What this means
Level
High
Grades offered
9–12
Enrollment (2024–25)
2,870 students
Students per teacher
15.8 to 1
AP courses offered
31
Charter school
No
Magnet school
No
Locale
Suburb — Large
School district
CUSD 308
County
Kendall County
NCES school ID
173027003132

Schools near Oswego High School

All 14 schools in Oswego →

School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.