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SCHOOL COMMUNITY·BALTIMORE COUNTY PUBLIC SCHOOLS·NCES 240012000373

Dulaney High

255 E Padonia Road, Timonium, MD 21093 · (443) 809-7633 · Baltimore County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL1,889 STUDENTS
Enrollment
1,889
High
DISTRICT 1,070 · STATE 1,185
Student : Teacher
18.0:1
105 FTE teachers
DISTRICT 14.9:1 · STATE 15.3:1
Free / Reduced Lunch
33%
628 students
DISTRICT 55% · STATE 54%
Community
5
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 950927%
Grade 1048326%
Grade 1143923%
Grade 1245824%
Student demographics
72%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 72% · STATE 73% · US 70%
White
79042%
DISTRICT 29% · STATE 31% · US 43%
Hispanic
40021%
DISTRICT 18% · STATE 24% · US 30%
Black
38821%
DISTRICT 40% · STATE 32% · US 15%
Asian
23112%
DISTRICT 7% · STATE 7% · US 6%
Two+
754%
DISTRICT 5% · STATE 5% · US 5%
Native American
30%
DISTRICT 0% · STATE 0% · US 1%
Pacific Islander
20%
DISTRICT 0% · STATE 0% · US 0%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
96651%
Female
92349%

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Test scores

MCAP 2024-25 . % Proficient (Levels 3-4)
English Language Arts
63.5%
MD avg 50.6% . -0.2pp since 2023
Math
10.0%
MD avg 34.8% . +0.0pp since 2023

What this means: On the MCAP, Maryland's statewide test, about 64 of every 100 students at this school read and write at grade level and about 10 of 100 do math at grade level. Across all Maryland schools, those numbers are about 51 and 35. Reading and writing scores have held steady since 2023, while math scores have held steady.

MCAP results by year

School yearEnglish Language ArtsMath
2024-2563.5%10.0%
2023-2463.7%10.0%
% Proficient (Levels 3-4), all students and all tested grades.
Source: MCAP. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
UNDERPERFORMING
Bottom 10% of MD schools after controlling for student poverty
Actual proficiency
36.8%
composite math + reading, all grades
Predicted
54.5%
based on MD schools with similar FRL share
Beats by
-17.7pp
below demographic expectation

What this means: About 37% of students here test proficient in math and reading, below the roughly 55% typical for Maryland schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

Schools most like Dulaney High

Dulaney High's state test result (36.8% proficient) is higher than 1 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Dulaney High this school1,88933.2%36.8%
Damascus High
Damascus
1,39030.6%39.9%
Sherwood High
Sandy Spring
1,67522.4%46.5%
Catonsville High
Baltimore
1,73540.7%41.2%
Quince Orchard High
Gaithersburg
2,10038.0%37.0%
Long Reach High
Columbia
1,33437.6%36.2%
Matched among Maryland high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where Dulaney High ranks

Among high schools
MeasureThis schoolIn MarylandIn Baltimore County
State test proficiency
ranked highest first
36.8%#94 of 203#7 of 24
Math proficiency
ranked highest first
10.0%#146 of 206
▼ 10
#11 of 24
▲ 3
Reading proficiency
ranked highest first
63.5%#89 of 206
▼ 14
#6 of 24
▲ 1
Enrollment
ranked largest first
1,889#40 of 234#5 of 32
Students per teacher
ranked fewest first
18.0:1#170 of 210#22 of 24
Diversity index
ranked most diverse first
72.2%#20 of 211#2 of 24
Free and reduced lunch
ranked highest share first
33.2%#159 of 212#20 of 25
Enrollment change since 2017-18
ranked fastest growth first
+4.8%#99 of 131#12 of 16
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
1,889
-41 (-2%) vs 2020
+30% since 1990-91, when it was 1,457
Student : Teacher
18.0:1
was 17.4:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-251,88910518.0:133% (628)
2023-241,845111.716.5:132% (582)
2022-231,821108.616.8:133% (600)
2020-211,93011117.4:127% (514)
2017-181,80210317.5:121% (385)
2015-161,85110118.3:120% (373)
2010-111,86611516.2:115% (280)
2000-011,73710316.9:14% (61)
1990-911,4578916.4:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Dulaney High.

Since 2017-18: students up 5% (1,802 to 1,889); teachers up 2% (103 to 105).

About Dulaney High

Dulaney High sits in Timonium, Maryland, and is classified as a high school. The grade span is 9 through 12, and enrollment is 1,889 students. An average school in this group (high schools in Maryland) has about 1,185 students.

Baltimore County Public Schools runs 177 schools with a combined 110,872 students. Dulaney High is one of them.

By race and ethnicity, the largest group at Dulaney High is White (42%). Other groups make up 21% Hispanic, 21% Black, 12% Asian, and 4% multiracial. Baltimore County as a whole is about 53% White, so the school's share is lower. Dulaney High has a diversity index of 72%, compared with 70% for all US public school students.

Teacher staffing is 105 full-time equivalents, or about 18.0 students per teacher. The 15.3:1 average for high schools in Maryland is lower than this school's figure. Eligibility for subsidized school meals is 33%. For comparison, public schools in Baltimore County average 53%.

Predicted from its free or reduced-price lunch share, Dulaney High would score about 54.5%. It scores 36.8%, a bottom-10% result among Maryland schools on BeatsExpectations.

Within Baltimore County, median household income is about $91,768, a bachelor's degree or higher is held by about 42% of adults, and the poverty rate is about 7%. Federal data list 180 public schools in Baltimore County, with a combined enrollment of about 110,872.

The closest other public school is Pot Spring Elementary, about 0.5 miles away. There are at least 8 other public schools within five miles. Nearby schools average 56.6% on proficiency, and Dulaney High is below that at 36.8%.

Locale data from NCES put Dulaney High in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more (Suburb: Large).

Enrollment was essentially flat over 4 years: 1,930 in 2020-21, 1,889 in 2024-25.

Questions about sports schedules, lunch menus, and spirit week can be posted here. Questions from prospective families are welcome too.

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
Dulaney High
District
Baltimore County Public Schools
Address
255 E Padonia Road, Timonium, MD 21093
Phone
(443) 809-7633
County
Baltimore County
Level
High
Grade range
09–12
Total enrollment
1,889
Teachers (FTE)
105
Student–teacher ratio
18.0:1
Free and reduced lunch
628 (33%)
Locale
21-Suburb: Large
NCES ID
240012000373
Charter school
No
Virtual school
No

Related schools

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

Frequently asked questions

About Dulaney High
How large is Dulaney High?
Dulaney High enrolls approximately 1,889 students in grades 09-12.
Is Dulaney High an elementary, middle, or high school?
Dulaney High is a high school covering grades 09-12.
How many teachers does Dulaney High have?
Dulaney High employs 105 FTE teachers, for a student-to-teacher ratio of 18.0:1.
How diverse is Dulaney High?
Dulaney High reports a student body of 42% White, 21% Hispanic, 21% Black, 12% Asian, 4% Two or more.
What district is Dulaney High in?
Dulaney High is part of Baltimore County Public Schools.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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