Enrollment
1,889
Maryland · 2024-25 NCES data
High school (grades 9-12) · Timonium, MD
Dulaney High
Federal NCES profile for Dulaney High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 55/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 240012000373
👥 S:T ratio 30
📚 AP courses 100
🌟 Gifted program 70
🎓 Counselors 31
📋 Attendance 41
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Dulaney High earns 55/100 on the Resource Investment Index, with class sizes larger than 86% of Maryland schools. It is also one of the largest schools in Maryland.
- #4 of 5
- public schools in Timonium · Resource Index
- 55
- Resource Index · Higher
- 17.5:1
- large classes for Maryland
- 27.7%
- free-lunch eligible
Dulaney High has class sizes larger than 86% of Maryland schools. Computed live against every Maryland school reporting to NCES.
By Resource Investment Index, Dulaney High ranks #4 of 5 public schools in Timonium, MD.
School address
District: Baltimore County Public Schools · Maryland
NCES ID 240012000373 Verify on NCES CCD record →
Teachers (FTE)
108.0
Federal CCD staff survey
Students per teacher
17.5:1
vs 14.5:1 Maryland avg
+21% vs state
Free-lunch eligible
27.7%
vs 49.0% Maryland avg
-43% vs state
Student-teacher ratio in context
How Dulaney High compares with Maryland and U.S. medians
What stands out at Dulaney High
Dulaney High is a large high school in Timonium, Maryland, enrolling 1,889 students.
Class loads run heavy: 17.5:1 is larger than about 86% of Maryland schools and 21% above the 14.5:1 state mean, so each teacher carries more students than is typical.
Economic need runs somewhat below the state's typical profile, with 27.7% of students eligible for free meals.
By headcount it is one of the larger campuses in Maryland, bigger than 97% of state schools at 1,889 students.
Its Resource Investment Index sits near the middle of the pack among 1,382 scored Maryland schools.
Against 62 statewide peers matched on enrollment and economic need, it ranks mid-pack at #33.
Its student body is led by White (42%) and Hispanic or Latino (21%) (diversity index 72/100).
On the academic-pipeline side it reports 32 Advanced Placement courses.
Counselor availability sits well past the ASCA benchmark, roughly 344 students sharing each counselor, though short of the most stretched campuses.
Attendance runs somewhat below the norm, with 23.5% of students chronically absent per the 2021-22 civil-rights collection.
Baltimore County Public Schools also operates Dundalk High (2,087 students) and Perry Hall High (2,012 students) alongside Dulaney High.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Dulaney High compares
Dulaney High on the metrics families compare, against Maryland and U.S. means.
| Metric | This school | vs Maryland | Maryland avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 17.5:1 | ▲ 21% | 14.5:1 | 15.7:1 |
| Free-lunch eligible | 27.7% | ▼ 43% | 49.0% | 51.7% |
| Enrollment | 1,889 | top 3% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
17.5:1
Leaner classes than 27% of US schools, heavier class loads than most.
1,889
Bigger than 98% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
27.7%
free-lunch eligible
- 43% below the Maryland average of 49.0%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
17.5:1
students per teacher
- 21% above state mean
Top 86% in Maryland - lower ratio than 14% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
23.5%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$16,538
per pupil, district-wide
- below Maryland avg of $20,446
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors5.5 FTE
Per 343 students, the combined health-and-guidance staffing load for this school.
Discipline context
1
in-school suspensions + 58 out-of-school
Suspension rate: 0.1 per 100 students. Combined in-school and out-of-school rate: 3.1 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 41.8%
Hispanic or Latino 21.2%
African American 20.5%
Asian 12.2%
Two or More 4.0%
American Indian / Alaska Native 0.2%
Native Hawaiian / Pacific Islander 0.1%
Largest group: White at 41.8% of enrollment.
Student-body diversity index 72.2/100
Simpson diversity index - at 72.2, Dulaney High is more mixed than the Maryland school average of 52.3.
Programs
AP courses offered 32
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Baltimore County Public Schools, which includes Dulaney High.
$16,538
Per student
-19%
vs Maryland
Avg $20,446
0%
vs U.S.
Avg $16,593
Revenue mix
Local 47.3%
State 40.7%
Federal 12.0%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Dulaney High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Dundalk High | Similar size | Higher economic need | Lower S:T ratio |
| Perry Hall High | Similar size | Higher economic need | Similar S:T ratio |
| Woodlawn High | Similar size | Higher economic need | Similar S:T ratio |
| Kenwood High | Similar size | Higher economic need | Similar S:T ratio |
| Parkville High | Similar size | Higher economic need | Lower S:T ratio |
Comparisons are relative to Dulaney High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,087
- Students per teacher
- 15.5:1
- Resource Index
- 48/100
- Enrollment
- 2,012
- Students per teacher
- 16.6:1
- Resource Index
- 39/100
- Enrollment
- 1,922
- Students per teacher
- 17:1
- Resource Index
- 46/100
- Enrollment
- 1,900
- Students per teacher
- 16.5:1
- Resource Index
- 45/100
- Enrollment
- 1,877
- Students per teacher
- 12.3:1
- Resource Index
- 56/100
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of Maryland, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~1,889 students)
Next steps
Verify locally before acting on Dulaney High's federal record.
- Compare Dulaney High against another school. Compare schools
- Baltimore County Public Schools's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Dulaney High
How many students attend Dulaney High?
Dulaney High has 1,889 students enrolled. It is a high school in Timonium, MD.
What is the student-teacher ratio at Dulaney High?
The student-teacher ratio at Dulaney High is 17.5:1, which is 21% higher than the Maryland average of 14.5:1 and 11% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Dulaney High?
27.7% of students at Dulaney High are eligible for free lunch, compared to the Maryland average of 49.0%.
What is the racial and ethnic makeup of Dulaney High?
The largest demographic group at Dulaney High is White at 41.8% of enrollment, in Timonium, MD. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 72.2/100.
What is the Resource Investment Index for Dulaney High?
Dulaney High has a Resource Investment Index of 55/100 (higher reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Dulaney High rank among public schools in Timonium?
By Resource Investment Index, Dulaney High ranks #4 of 5 public schools in Timonium, MD. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Timonium on the city page.
Is Dulaney High a good school?
Dulaney High earns 55/100 on the Resource Investment Index, with class sizes larger than 86% of Maryland schools. It is also one of the largest schools in Maryland. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Baltimore County Public Schools?
Besides Dulaney High, Baltimore County Public Schools also operates Dundalk High (2,087 students), Perry Hall High (2,012 students), and Woodlawn High (1,922 students). See the Baltimore County Public Schools district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.