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SCHOOL COMMUNITY·CUSD 308·NCES 173027003133

Thompson Jr High School

440 Boulder Hill Pass, Oswego, IL 60543 · (630) 636-2600 · Kendall County
GRADES 06–08MIDDLE21-SUBURBTITLE IREGULAR SCHOOL832 STUDENTS
Enrollment
832
Middle
DISTRICT 746 · STATE 462
Student : Teacher
16.8:1
50 FTE teachers
DISTRICT 15.0:1 · STATE 13.0:1
Free / Reduced Lunch
42%
350 students
DISTRICT 31% · STATE 56%
Community
1
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Grade 6
290
Grade 7
277
Grade 8
265
Student demographics
White
31238%
DISTRICT 46% · STATE 45%
Hispanic
35943%
DISTRICT 27% · STATE 29%
Black
10513%
DISTRICT 11% · STATE 16%
Asian
142%
DISTRICT 10% · STATE 6%
Two+
364%
DISTRICT 5% · STATE 5%
Native American
40%
DISTRICT 0% · STATE 0%
Student head counts by race/ethnicity from federal NCES enrollment data. Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
43452%
Female
39648%

Discussions

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Test scores

IAR + ISA 2024-25 . % Proficient (Levels 4-5)
English Language Arts
46.9%
IL avg 51.0% . +9.8pp since 2023
Math
29.9%
IL avg 37.9% . +8.5pp since 2023
Source: IAR + ISA. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
37.4%
composite math + reading, all grades
Predicted
47.2%
based on IL schools with similar FRL share
Beats by
-9.8pp
below demographic expectation
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

7-year change

SY 2017-18 vs SY 2024-25
Enrollment
832
-54 (-6%) vs 2017
Student : Teacher
16.8:1
was 15.5:1
% White
38%
was 55%
% Hispanic
43%
was 26%
% Black
13%
was 10%
% Asian
2%
was 3%
Source: NCES Common Core of Data

About Thompson Jr High School

Thompson Jr High School is a 6-8 campus of substantial scale in Oswego, Illinois, run under CUSD 308, caters to 832 students in grades 6 through 8. Enrollment runs roughly 80% larger than the state mean of about 462.

Thompson Jr High School is one of 21 schools operated by CUSD 308, a district that enrolls 16,766 students overall.

In terms of who attends, Thompson Jr High School records that 43% of students identify as Hispanic, with the remaining enrollment distributed across several groups. Other groups include 38% White, 13% Black, 4% multiracial. That is meaningfully more Hispanic than the county at large, where the share is closer to 22%.

On the resource side, Staff filings list 50 full-time-equivalent teachers, which works out to roughly 16.8:1 students per teacher. The state averages around 13.0:1, so this campus is higher than the state norm typical. An estimated 42% of students are eligible for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal. Set against Kendall County (around 32%), the school's rate is noticeably above typical.

With demographic context factored in, Thompson Jr High School sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 47.2%; this one delivers 37.4%.

In the broader community, census data for Kendall County shows median household income runs about $111,601, roughly 37% of adults have completed at least a four-year degree, and roughly 5% of residents live below the federal poverty line. Thompson Jr High School is one of 50 public schools in Kendall County (combined enrollment of about 29,773 students).

Nearest neighbor: Old Post Elementary School, around 0.6 miles off. Within five miles, there are 8 other public schools. Among the 9 schools in that immediate cluster with test data (this one included), Thompson Jr High School ranks 7th on composite proficiency, beneath the local average of 45.7%.

Geographically, the school is in a suburban area.

Looking at the recent track record. Over the past 7-year window, the student count fell 6%: 886 students in 2018 compared to 832 in 2025. White enrollment moved from 55% to 38% across the same window. Class-load math has loosened: from 15.5:1 in 2018 to 16.8:1 in 2025.

Within the allk12 community for this school, recent activity here tends to focus on science fair prep, picture-day reminders, and bus-route questions. Contributors range from current parents to recent graduates and teachers.

Kendall County at a glance

View full county profile
Population
137,675
Census ACS
Median income
$111,601
Household, ACS
Bachelor's+
37%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
50
29,773 students

Quick facts

School name
Thompson Jr High School
District
CUSD 308
Address
440 Boulder Hill Pass, Oswego, IL 60543
Phone
(630) 636-2600
County
Kendall County
Level
Middle
Grade range
06–08
Total enrollment
832
Teachers (FTE)
50
Student–teacher ratio
16.8:1
Free/Reduced lunch
350 (42%)
Locale
21-Suburb: Large
NCES ID
173027003133
Charter school
No
Virtual school
No

Related schools

Other schools in CUSD 308
Other schools in Oswego
Nearby schools

Frequently asked questions

About Thompson Jr High School
What is the total enrollment at Thompson Jr High School?
Thompson Jr High School enrolls approximately 832 students in grades 06-08.
What grades does Thompson Jr High School serve?
Thompson Jr High School serves grades 06-08.
What is the student-teacher ratio at Thompson Jr High School?
The student-to-teacher ratio at Thompson Jr High School is approximately 16.8:1 (50 FTE teachers).
How diverse is Thompson Jr High School?
Thompson Jr High School reports a student body of 38% White, 43% Hispanic, 13% Black, 2% Asian, 4% Two or more.
What district is Thompson Jr High School in?
Thompson Jr High School is part of CUSD 308.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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