The bulletin board for America's public schools. Parents, teachers, students, and staff. One community per school.
SCHOOL COMMUNITY·BALTIMORE COUNTY PUBLIC SCHOOLS·NCES 240012000355

Catonsville High

421 Bloomsbury Ave, Baltimore, MD 21228 · (410) 887-0808 · Baltimore County
GRADES 09–12HIGH21-SUBURBTITLE IREGULAR SCHOOL1,735 STUDENTS
Enrollment
1,735
High
DISTRICT 1,070 · STATE 1,185
Student : Teacher
17.4:1
100 FTE teachers
DISTRICT 14.9:1 · STATE 15.3:1
Free / Reduced Lunch
41%
707 students
DISTRICT 55% · STATE 54%
Community
1
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Grade 9
417
Grade 10
455
Grade 11
416
Grade 12
447
Student demographics
White
73943%
DISTRICT 29% · STATE 31%
Hispanic
19911%
DISTRICT 18% · STATE 24%
Black
40523%
DISTRICT 40% · STATE 32%
Asian
28416%
DISTRICT 7% · STATE 7%
Two+
996%
DISTRICT 5% · STATE 5%
Native American
30%
DISTRICT 0% · STATE 0%
Pacific Islander
50%
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
90152%
Female
83348%

Discussions

+ POST

Test scores

MCAP 2024-25 . % Proficient (Levels 3-4)
English Language Arts
62.5%
MD avg 50.6% . -6.3pp since 2023
Math
10.0%
MD avg 34.8% . -13.6pp since 2023
Source: MCAP. 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
41.2%
composite math + reading, all grades
Predicted
50.1%
based on MD schools with similar FRL share
Beats by
-8.9pp
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
1,735
-48 (-3%) vs 2017
Student : Teacher
17.4:1
was 17.3:1
% White
43%
was 52%
% Hispanic
11%
was 6%
% Black
23%
was 26%
% Asian
16%
was 11%
Source: NCES Common Core of Data

About Catonsville High

Set in Baltimore, Maryland, Catonsville High is a middle-of-the-pack senior high, overseen by Baltimore County Public Schools. It works with 1,735 students across grades 9 through 12. By comparison, Maryland's public schools average about 1,185 students each, so Catonsville High sits 46% bigger than that benchmark.

Baltimore County Public Schools runs 177 schools in total, collectively educating 110,872 students. Catonsville High is one of those campuses.

Demographically, Catonsville High lists that 43% of students identify as White, with the remaining enrollment distributed across several groups. Beyond that, the school shows 23% Black, 16% Asian, 11% Hispanic, 6% multiracial. The wider county runs roughly 53% White, putting the school's mix meaningfully less White than the area baseline.

Looking at school resources, Staff filings list 100 full-time-equivalent teachers, which works out to roughly 17.4:1 students per teacher. That figure is higher than the state norm's 15.3:1 average. Roughly 41% of students at Catonsville High qualify for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal. That share is south of Baltimore County's rate of about 53%.

With demographic context factored in, Catonsville High performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 50.1%, the actual is 41.2%, a residual of -8.9 points.

In the broader community, community-level numbers for Baltimore County indicate the typical household earns roughly $91,768 per year, 42% of adults hold a bachelor's degree or higher, and the poverty rate sits near 7%. Across Baltimore County's 180 public schools (combined enrollment of about 110,872 students), Catonsville High is one campus in the mix.

Nearest neighbor: Catonsville Center for Alternative Studies, around 0.6 miles off. Counting just inside five miles, 8 other public schools cluster around Catonsville High. Ranking that nearby cluster on reported proficiency puts Catonsville High at 6th of 7; the average score across the group is 52.4%.

Catonsville High operates from a bedroom-community location.

Looking at the recent track record. Looking back 7 years, enrollment at Catonsville High has decreased 3%, going from 1,783 students in 2018 to 1,735 in 2025. The White share of enrollment declined from 52% to 43% over that span.

On allk12, recent activity here tends to focus on pickup logistics, teacher feedback, and after-school programs. Members of the school community can share what they know.

Baltimore County at a glance

View full county profile
Population
850,796
Census ACS
Median income
$91,768
Household, ACS
Bachelor's+
42%
Adults 25+
Poverty rate
7%
Below federal line
Schools in county
180
110,872 students

Quick facts

School name
Catonsville High
District
Baltimore County Public Schools
Address
421 Bloomsbury Ave, Baltimore, MD 21228
Phone
(410) 887-0808
County
Baltimore County
Level
High
Grade range
09–12
Total enrollment
1,735
Teachers (FTE)
100
Student–teacher ratio
17.4:1
Free/Reduced lunch
707 (41%)
Locale
21-Suburb: Large
NCES ID
240012000355
Charter school
No
Virtual school
No

Related schools

Other schools in Baltimore County Public Schools
Other schools in Baltimore
Nearby schools

Frequently asked questions

About Catonsville High
How large is Catonsville High?
Catonsville High enrolls approximately 1,735 students in grades 09-12.
Is Catonsville High an elementary, middle, or high school?
Catonsville High is a high school covering grades 09-12.
How many teachers does Catonsville High have?
Catonsville High employs 100 FTE teachers, for a student-to-teacher ratio of 17.4:1.
What is the student diversity at Catonsville High?
Student demographics at Catonsville High are roughly 43% White, 11% Hispanic, 23% Black, 16% Asian, 6% Two or more.
Who oversees Catonsville High?
Catonsville High is overseen by Baltimore County Public Schools in Baltimore County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
+ Post