- Enrollment
- 1,440
- Students per teacher
- 15.7:1
- Resource Index
- 34/100
Middle school (grades 6-8) · Bel Air, MD
Patterson Mill Middle School
Federal NCES profile for Patterson Mill Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 49/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 240039001642
👥 S:T ratio 42
🌟 Gifted program 70
🎓 Counselors 28
📋 Attendance 55
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Patterson Mill Middle School earns 49/100 on the Resource Investment Index, with class sizes near the Maryland median.
- #1 of 3
- middle schools in Bel Air · Resource Index
- 49
- Resource Index · Higher
- 14.6:1
- students per teacher
- 18.2%
- free-lunch eligible
Patterson Mill Middle School has class sizes near the Maryland median. Computed live against every Maryland school reporting to NCES.
By Resource Investment Index, Patterson Mill Middle School ranks #1 of 3 middle schools in Bel Air, MD.
School address
District: Harford County Public Schools · Maryland
NCES ID 240039001642 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+7 students YoY
Patterson Mill Middle School held near 767 students from 2022-23 to 2023-24 (+7 headcount).
Teacher FTE added 49.3 → 49.6 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+7 students YoY 240039001642 · Bel Air, MD Middle · MID · TRAD
716 enr · 14.6:1 · 18.2% lunch · RII 49
Nearest enrollment peer: Edgewood High (1,440 students)
Patterson Mill Middle School held near 767 students from 2022-23 to 2023-24 (+7 headcount). Teacher FTE added 49.3 → 49.6 across the same CCD years. Read with this school → · District book → · Maryland schools → · Find another →
Patterson Mill Middle School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Edgewood High
Edgewood High
1,440 students
- Aberdeen High
Aberdeen High
1,396 students
- Bel Air High
Bel Air High
1,341 students
- C. Milton Wrig
C. Milton Wright High
1,291 students
- North Harford
North Harford High
1,204 students
- This school
Patterson Mill Middle School
716 students
What this shows Patterson Mill Middle School reports 716 students on the CCD universe file.
How Patterson Mill Middle School compares
Patterson Mill Middle School 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 | 14.6:1 | ▲ 1% | 14.5:1 | 15.7:1 |
| Free-lunch eligible | 18.2% | ▼ 63% | 49.0% | 51.7% |
| Enrollment | 716 | top 28% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.6:1
Leaner classes than 51% of US schools, a middle-of-the-pack class size.
716
Bigger than 81% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
18.2%
free-lunch eligible
- 63% below the Maryland average of 49.0%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
14.6:1
students per teacher
- 1% above state mean
Top 52% in Maryland - lower ratio than 48% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
17.9%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
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
Counselors2.0 FTE
Per 358 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 35 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 4.9 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 71.0%
African American 9.8%
Hispanic or Latino 6.7%
Asian 6.6%
Two or More 5.9%
Largest group: White at 71.0% of enrollment.
Student-body diversity index 47.4/100
Simpson diversity index - at 47.4, Patterson Mill Middle School is less mixed than the Maryland school average of 52.3.
Programs
Gifted & talented Yes
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 Patterson Mill Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Edgewood High | Larger | Higher economic need | Similar S:T ratio |
| Aberdeen High | Larger | Higher economic need | Similar S:T ratio |
| Bel Air High | Larger | Similar economic need | Similar S:T ratio |
| C. Milton Wright High | Larger | Similar economic need | Similar S:T ratio |
| North Harford High | Larger | Similar economic need | Higher S:T ratio |
Comparisons are relative to Patterson Mill Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,396
- Students per teacher
- 13.8:1
- Resource Index
- 20/100
- Enrollment
- 1,341
- Students per teacher
- 14.7:1
- Resource Index
- 39/100
- Enrollment
- 1,291
- Students per teacher
- 15.4:1
- Resource Index
- 41/100
- Enrollment
- 1,204
- Students per teacher
- 16.3:1
- Resource Index
- 31/100
Similar middle schools in Bel Air
2 comparable middle schools (grades 6-8) serving the same city.
Nationwide middle 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 (~716 students)
Frequently asked questions about Patterson Mill Middle School
How many students attend Patterson Mill Middle School?
Patterson Mill Middle School has 716 students enrolled. It is a middle school in Bel Air, MD. CCD year-over-year: 760 (2022-23) → 767 (2023-24), nearly flat (+7).
What is the student-teacher ratio at Patterson Mill Middle School?
The student-teacher ratio at Patterson Mill Middle School is 14.6:1, which is 1% higher than the Maryland average of 14.5:1 and 7% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Patterson Mill Middle School?
18.2% of students at Patterson Mill Middle School are eligible for free lunch, compared to the Maryland average of 49.0%.
What is the racial and ethnic makeup of Patterson Mill Middle School?
The largest demographic group at Patterson Mill Middle School is White at 71.0% of enrollment, in Bel Air, MD.
What is the Resource Investment Index for Patterson Mill Middle School?
Patterson Mill Middle School has a Resource Investment Index of 49/100 (higher 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 Patterson Mill Middle School rank among middle schools in Bel Air?
By Resource Investment Index, Patterson Mill Middle School ranks #1 of 3 middle schools in Bel Air, MD. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Bel Air on the city page.
What other schools are in Harford County Public Schools?
Besides Patterson Mill Middle School, Harford County Public Schools also operates Edgewood High (1,440 students), Aberdeen High (1,396 students), and Bel Air High (1,341 students). See the Harford County Public Schools district page for the complete list.