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SCHOOL COMMUNITY·CHICAGO PUBLIC SCHOOLS DIST 299·NCES 170993000944

Mason Elem School

4217 W 18th St, Chicago, IL 60623 · (773) 534-1530 · Cook County
GRADES PK–08ELEMENTARY11-CITYTITLE IREGULAR SCHOOL241 STUDENTS
Enrollment
241
Elementary
DISTRICT 463 · STATE 381
Student : Teacher
11.9:1
20 FTE teachers
DISTRICT 14.6:1 · STATE 13.9:1
Free / Reduced Lunch
95%
229 students
DISTRICT 78% · STATE 56%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Pre-K
28
Kindergarten
25
Grade 1
22
Grade 2
18
Grade 3
31
Grade 4
23
Grade 5
23
Grade 6
30
Grade 7
14
Grade 8
26
Grade 12
1
Student demographics
White
31%
DISTRICT 11% · STATE 45%
Hispanic
4117%
DISTRICT 47% · STATE 29%
Black
19782%
DISTRICT 34% · STATE 16%
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
14460%
Female
9740%

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Test scores

IAR + ISA 2024-25 . % Proficient (Levels 4-5)
English Language Arts
19.0%
IL avg 51.0% . +12.2pp since 2023
Math
6.3%
IL avg 37.9% . +1.5pp 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
11.3%
composite math + reading, all grades
Predicted
16.6%
based on IL schools with similar FRL share
Beats by
-5.3pp
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
241
-138 (-36%) vs 2017
% White
1%
was 1%
% Hispanic
17%
was 2%
% Black
82%
was 97%
Source: NCES Common Core of Data

About Mason Elem School

Mason Elem School is a tight-knit primary school in Chicago, Illinois, operated by Chicago Public Schools Dist 299. The school works with 241 students in grades pre-K through 8. By comparison, Illinois's public schools average about 381 students each, so Mason Elem School sits 37% smaller than that benchmark.

Chicago Public Schools Dist 299 comprises 622 schools with combined enrollment of 324,396 students; Mason Elem School is among them.

Demographically, Mason Elem School records that 82% of students identify as Black, making the school strongly Black-majority. Other groups include 17% Hispanic. That is visibly more Black than the county at large, where the share is closer to 22%.

Looking at school resources, On paper, Mason Elem School has 20 full-time-equivalent teachers, translating to a class-load average of around 11.9:1. The state averages around 13.9:1, so this campus is tighter than the state norm typical. About 95% of enrolled students meet the income threshold for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. By comparison, Cook County runs at roughly 66%, so the school's eligibility rate is somewhat above the surrounding baseline.

With demographic context factored in, Mason Elem School sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 16.6%; this one delivers 11.3%.

In the surrounding community, ACS estimates for Cook County put median household earnings sit near $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%. Across Cook County's 1406 public schools (combined enrollment of about 697,934 students), Mason Elem School is one campus in the mix.

The closest other public school is Hughes C Elem School, roughly 0.3 miles away. Within five miles, there are 8 other public schools. Among the 9 schools in that immediate cluster with test data (this one included), Mason Elem School ranks 5th on composite proficiency, below the local average of 12.1%.

The campus sits in a downtown setting.

Over the past 7-year window. Mason Elem School's enrollment has declined 36% since 2018, when it stood at 379 (now 241). Hispanic enrollment moved from 2% to 17% across the same window.

On the community side, members of the Mason Elem School community share and discuss open house dates, ride-share offers, and field-trip permission slips. Posting is open to anyone connected to the school.

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
Mason Elem School
District
Chicago Public Schools Dist 299
Address
4217 W 18th St, Chicago, IL 60623
Phone
(773) 534-1530
County
Cook County
Level
Elementary
Grade range
PK–08
Total enrollment
241
Teachers (FTE)
20
Student–teacher ratio
11.9:1
Free/Reduced lunch
229 (95%)
Locale
11-City: Large
NCES ID
170993000944
Charter school
No
Virtual school
No

Related schools

Other schools in Chicago Public Schools Dist 299
Other schools in Chicago
Nearby schools

Frequently asked questions

About Mason Elem School
How many students attend Mason Elem School?
Mason Elem School enrolls approximately 241 students in grades PK-08.
What grades does Mason Elem School serve?
Mason Elem School serves grades PK-08.
How many students per teacher at Mason Elem School?
Approximately 11.9:1 students per teacher at Mason Elem School.
How diverse is Mason Elem School?
Mason Elem School reports a student body of 1% White, 17% Hispanic, 82% Black.
Who oversees Mason Elem School?
Mason Elem School is overseen by Chicago Public Schools Dist 299 in Cook County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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