High school (grades 9-12) · Aberdeen, MD

Aberdeen High

Federal NCES profile for Aberdeen High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 20/100.

2024-25 NCES dataHigh school (grades 9-12)NCES 240039000679

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Compiled from official source data by PlainSchools. · Updated August 2026

The verdict

Aberdeen High earns 20/100 on the Resource Investment Index, with class sizes near the Maryland median.

#7 of 7
public schools in Aberdeen · Resource Index: 20
Resource Index · Lower: 13.8:1
students per teacher: 47.6%
free-lunch eligible

Aberdeen High has class sizes near the Maryland median. Computed live against every Maryland school reporting to NCES.

By Resource Investment Index, Aberdeen High ranks #7 of 7 public schools in Aberdeen, MD.

School address

Aberdeen, MD 21001

District: Harford County Public Schools · Maryland

NCES ID 240039000679 Verify on NCES CCD record →

CCD year-over-year · 2022-23 → 2023-24

-30 students YoY

Aberdeen High held near 1,465 students from 2022-23 to 2023-24 (-30 headcount).

Teacher FTE lost 101.3 → 97.8 across the same CCD years.

Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).

Steady CCD campus

-30 students YoY 240039000679 · Aberdeen, MD High · MID · TRAD

1,396 enr · 13.8:1 · 47.6% lunch · RII 20

Nearest enrollment peer: Edgewood High (1,440 students)

Aberdeen High held near 1,465 students from 2022-23 to 2023-24 (-30 headcount). Teacher FTE lost 101.3 → 97.8 across the same CCD years. Read with this school → · District book → · Maryland schools → · Find another →

Edgewood High

1,440
This school

1,396
Bel Air High

1,341
C. Milton Wrig

1,291
North Harford

1,204
Southampton Mi

1,192

What this shows Aberdeen High reports 1,396 students on the CCD universe file.

How Aberdeen High compares

Aberdeen High held steady on CCD headcount: ratios and free-lunch share vs Maryland and U.S. means.

Metric	This school	vs Maryland	Maryland avg	U.S. avg
Students per teacher	13.8:1	▼ 5%	14.5:1	15.7:1
Free-lunch eligible	47.6%	▼ 3%	49.0%	51.7%
Enrollment	1,396	top 7%	-	-

Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25

13.8:1

Leaner classes than 59% of US schools, a middle-of-the-pack class size.

1,396

Bigger than 95% of US schools by enrollment, a large campus nationally.

Equity indicators methodology

Economic need

47.6%

free-lunch eligible - 3% below the Maryland average of 49.0%

Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.

Staffing depth

13.8:1

students per teacher - 5% below state mean

Top 40% in Maryland - lower ratio than 60% of state schools

Close to the 15:1 benchmark most often cited for individualized attention.

Engagement

48.0%

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

$17,493

per pupil, district-wide - below Maryland avg of $18,753

Close to the U.S. public-school average per-pupil spend.

Support staff

Counselors3.0 FTE

Per 465 students, the combined health-and-guidance staffing load for this school.

Discipline context

in-school suspensions + 167 out-of-school

Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 12.0 per 100 students. Reported via the Civil Rights Data Collection. Includes 15 expulsions.

Student demographics

African American 41.2%

White 29.0%

Hispanic or Latino 15.1%

Two or More 9.7%

Asian 4.7%

American Indian / Alaska Native 0.4%

Native Hawaiian / Pacific Islander 0.1%

Largest group: African American at 41.2% of enrollment.

Student-body diversity index 71.2/100

Simpson diversity index - at 71.2, Aberdeen High is more mixed than the Maryland school average of 52.3.

Programs

AP courses offered 21

District finance for Harford County Public Schools reports $17,493 per pupil (NCES F-33) - open the district page for the full revenue mix.

How Aberdeen High Compares to District-Mates

School	Enrollment	Economic Profile	Student-Teacher Ratio	Resources	Type
Edgewood High	Similar size	Similar economic need	Higher S:T ratio	Higher resources	Traditional public
Bel Air High	Similar size	Lower economic need	Similar S:T ratio	Higher resources	Traditional public
C. Milton Wright High	Similar size	Lower economic need	Higher S:T ratio	Higher resources	Traditional public
North Harford High	Similar size	Lower economic need	Higher S:T ratio	Higher resources	Traditional public
Southampton Middle	Similar size	Lower economic need	Higher S:T ratio	Higher resources	Traditional public

Comparisons are relative to Aberdeen High's own figures; each column derives from NCES Common Core of Data.

Other Schools in This District

Harford County Public Schools · 5 sibling schools

View district profile

Edgewood High

High Standard

Enrollment: 1,440
Students per teacher: 15.7:1
Resource Index: 34/100

Compare side-by-side

Bel Air High

High Standard

Enrollment: 1,341
Students per teacher: 14.7:1
Resource Index: 39/100

Compare side-by-side

C. Milton Wright High

High Standard

Enrollment: 1,291
Students per teacher: 15.4:1
Resource Index: 41/100

Compare side-by-side

North Harford High

High Standard

Enrollment: 1,204
Students per teacher: 16.3:1
Resource Index: 31/100

Compare side-by-side

Southampton Middle

Middle Standard

Enrollment: 1,192
Students per teacher: 15.7:1
Resource Index: 38/100

Compare side-by-side

Nationwide high schools with similar size or staffing

Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.

Similar enrollment (~1,396 students)

Similar student-teacher ratio (~13.8:1)

Frequently asked questions about Aberdeen High

How many students attend Aberdeen High?

Aberdeen High has 1,396 students enrolled. It is a high school in Aberdeen, MD. CCD year-over-year: 1,495 (2022-23) → 1,465 (2023-24), nearly flat (-30).

What is the student-teacher ratio at Aberdeen High?

The student-teacher ratio at Aberdeen High is 13.8:1, which is 5% lower than the Maryland average of 14.5:1 and 12% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.

What percentage of students receive free lunch at Aberdeen High?

47.6% of students at Aberdeen High are eligible for free lunch, compared to the Maryland average of 49.0%.

What is the racial and ethnic makeup of Aberdeen High?

The largest demographic group at Aberdeen High is African American at 41.2% of enrollment, in Aberdeen, MD. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 71.2/100.

What is the Resource Investment Index for Aberdeen High?

Aberdeen High has a Resource Investment Index of 20/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).

How does Aberdeen High rank among public schools in Aberdeen?

By Resource Investment Index, Aberdeen High ranks #7 of 7 public schools in Aberdeen, 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 Aberdeen on the city page.

What other schools are in Harford County Public Schools?

Besides Aberdeen High, Harford County Public Schools also operates Edgewood High (1,440 students), Bel Air High (1,341 students), and C. Milton Wright High (1,291 students). See the Harford County Public Schools district page for the complete list.

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Compiled from official source data by PlainSchools. · Updated August 2026