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SCHOOL COMMUNITY·ARLINGTON HEIGHTS SD 25·NCES 170414000106

Thomas Middle School

1430 N Belmont Ave, Arlington Heights, IL 60004 · (847) 398-4260 · Cook County
GRADES 06–08MIDDLE21-SUBURBREGULAR SCHOOL1,024 STUDENTS
Enrollment
1,024
Middle
DISTRICT 918 · STATE 462
Student : Teacher
13.3:1
77 FTE teachers
DISTRICT 12.7:1 · STATE 13.0:1
Free / Reduced Lunch
16%
164 students
DISTRICT 16% · 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
327
Grade 7
353
Grade 8
344
Student demographics
White
72271%
DISTRICT 74% · STATE 45%
Hispanic
949%
DISTRICT 10% · STATE 29%
Black
162%
DISTRICT 1% · STATE 16%
Asian
17417%
DISTRICT 14% · STATE 6%
Two+
61%
DISTRICT 0% · STATE 5%
Native American
20%
DISTRICT 0% · STATE 0%
Pacific Islander
101%
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
53052%
Female
49448%

Discussions

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Test scores

IAR + ISA 2024-25 . % Proficient (Levels 4-5)
English Language Arts
79.1%
IL avg 51.0% . +20.0pp since 2023
Math
59.7%
IL avg 37.9% . +11.5pp 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
69.9%
composite math + reading, all grades
Predicted
62.3%
based on IL schools with similar FRL share
Beats by
+7.6pp
above 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
1,024
+50 (+5%) vs 2017
Student : Teacher
13.3:1
was 13.4:1
% White
71%
was 75%
% Hispanic
9%
was 9%
% Black
2%
was 1%
% Asian
17%
was 12%
Source: NCES Common Core of Data

About Thomas Middle School

Thomas Middle School is a well-populated middle school in Arlington Heights, Illinois, run under Arlington Heights SD 25. The school teaches 1,024 students in grades 6 through 8. That puts it 122% bigger than the typical public school in Illinois, which averages around 462 students.

Arlington Heights SD 25 comprises 9 schools with combined enrollment of 5,423 students; Thomas Middle School is among them.

On demographics, Thomas Middle School lists that 71% of the student body identifies as White. The remainder consists of 17% Asian, 9% Hispanic. The wider county runs roughly 44% White, putting the school's mix meaningfully more White than the area baseline.

Looking at school resources, Thomas Middle School records 77 full-time-equivalent teachers, putting the student-to-teacher ratio at about 13.3:1. The state averages about 13.0:1, putting this campus right in line with peers. Roughly 16% of students at Thomas Middle School qualify for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal. Set against Cook County (around 66%), the school's rate is noticeably below typical.

With demographic context factored in, Thomas Middle School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 62.3%, the actual is 69.9%, a residual of +7.6 points.

Across the wider county, the surrounding county (Cook County) reports that median household income runs about $83,498, about 43% of the adult population holds a bachelor's degree or above, and census figures put the poverty rate at about 10%. In all, Cook County runs 1406 public schools (combined enrollment of about 697,934 students), of which Thomas Middle School is one.

Nearest neighbor: Olive-Mary Stitt School, around 0.2 miles off. 8 of the 8 nearest public schools sit inside a five-mile radius. Among the 8 schools in that immediate cluster with test data (this one included), Thomas Middle School ranks 5th on composite proficiency, above the local average of 69.3%.

Thomas Middle School operates from a commuter-belt location.

Five-year trend. Thomas Middle School's enrollment has rose 5% since 2018, when it stood at 974 (now 1,024). Over the same period, the Asian share rose from 12% to 17%.

Within the allk12 community for this school, the page collects discussion, questions, and updates around pickup logistics, teacher feedback, and after-school programs. Members of the school community can share what they know.

Cook County at a glance

View full county profile
Population
5,182,090
Census ACS
Median income
$83,498
Household, ACS
Bachelor's+
43%
Adults 25+
Poverty rate
10%
Below federal line
Schools in county
1,406
697,934 students

Quick facts

School name
Thomas Middle School
District
Arlington Heights SD 25
Address
1430 N Belmont Ave, Arlington Heights, IL 60004
Phone
(847) 398-4260
County
Cook County
Level
Middle
Grade range
06–08
Total enrollment
1,024
Teachers (FTE)
77
Student–teacher ratio
13.3:1
Free/Reduced lunch
164 (16%)
Locale
21-Suburb: Large
NCES ID
170414000106
Charter school
No
Virtual school
No

Related schools

Other schools in Arlington Heights SD 25
Other schools in Arlington Heights
Nearby schools

Frequently asked questions

About Thomas Middle School
How large is Thomas Middle School?
Thomas Middle School enrolls approximately 1,024 students in grades 06-08.
What age range does Thomas Middle School serve?
Thomas Middle School serves students from grade 06 through grade 08.
What is the student-teacher ratio at Thomas Middle School?
The student-to-teacher ratio at Thomas Middle School is approximately 13.3:1 (77 FTE teachers).
What is the racial breakdown of students at Thomas Middle School?
At Thomas Middle School, the student body is approximately 71% White, 9% Hispanic, 2% Black, 17% Asian, 1% Two or more.
Who oversees Thomas Middle School?
Thomas Middle School is overseen by Arlington Heights SD 25 in Cook County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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