Very Good
#344 of 1,363 schools in MD
Top 25% in state
Patterson Mill High School
High School · Harford County Public Schools · Bel Air, MD
A Harford County Public Schools high school where students score 11 points below what's typical for similar communities.
85 Patterson Mill Rd, Bel Air, MD 21015
- Math 20% vs MD 30% (2025)
- Reading 72% vs MD 51% (2025)
- 95%+ 4-year graduation
Academics
Full Profile · 4/4 metricsView breakdown
View breakdown
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Students at Patterson Mill High School score 46% proficient, which is below what's typical for similar communities (expected: 57%).
2025 MCAP proficiency
Most recent published year. School vs. MD average.
Trend
↓ DecliningProficiency has fallen 29 points since 2020, to 46% in 2025, across a 17-year record (2009–2025).
Show all 14 years
Multi-year averages used by the rating model: math 80% (multi-year average, 2009-2025) · reading/ELA 82% (multi-year average, 2009-2025)
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Based on 28 test records from MD state assessments and EdFacts (NCES).
Equity & diversity
Shown separately, not included in the overall scoreFree/reduced lunch
23.5%
Students qualifying for federal meal assistance
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateThe neighborhood
Where Patterson Mill High School sits, and what the surrounding area looks like.
Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries.
Getting around & local context
- Walk 19Car-Dependent
- Transit 21Minimal Transit
- Bike 25Somewhat Bikeable
- City Safety: High2,245/100K
Powered by
FBI Uniform Crime Reporting · 2024 · city context (Bel Air), not school-level safety or attendance eligibility. Source details
Source period: 2024. Freshness not available.
Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)
Median income
$137,219
Median home value
$418,400
Median rent
$1,730/mo
College educated
52.2%
Homeownership
90.5%
Poverty rate
4.8%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 21015; this is area context, not an attendance boundary.
Programs & students
Programs & Offerings
Compare nearby
Nearby same-level schools
4 from a 5-mile search; district fallback available
| School | Score | Grades | Distance | Enrollment | Compare |
|---|---|---|---|---|---|
| Emmorton Baptist AcademyPrivate · tuition | 5.7private | K–12 | 0.5 mi | 49 | Compare → |
| Bel Air HighEnrollment path unverified | 7.6 | 9–12 | 2.1 mi | 1,419 | Compare → |
| John Carroll SchoolPrivate · tuition | 5.0private | 9–12 | 2.2 mi | 715 | Compare → |
| Grace Classical AcademyPrivate · tuition | 5.6private | PK–12 | 3.2 mi | 143 | Compare → |
Distance is proximity only; it is not attendance eligibility.
Private · tuition: Potential private option; tuition and admission requirements have not been verified.
Enrollment path unverified: Potential public school; its attendance or application path has not been classified.
Public and private scores come from different models and are shown side by side, not blended into one ranking.
Harford County Public Schools
- Schools in district
- 55
- Rank in district
- #19 of 55
- District spending per student
- $17,493NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- 7.2%Census SAIPE · 2024
Patterson Mill High School is listed in Harford County Public Schools; a district label does not verify attendance for an address.
About Patterson Mill High School
Patterson Mill High School is a public high school in Bel Air, MD, part of Harford County Public Schools, serving approximately 826 students in grades 9th-12th with a 16.2:1 student-teacher ratio. It holds a MySchoolScout rating of 7.7 out of 10 and ranks #344 of 1,363 schools in MD. State assessment records show 80% math proficiency (multi-year average, 2009-2025) and 82% reading/ELA proficiency (multi-year average, 2009-2025).
Frequently asked questions
Common questions about Patterson Mill High School
What grades does Patterson Mill High School serve?
Patterson Mill High School serves students in grades 9th through 12th.
How many students attend Patterson Mill High School?
Patterson Mill High School has an enrollment of approximately 826 students.
What is the student-teacher ratio at Patterson Mill High School?
The student-teacher ratio at Patterson Mill High School is 16.2:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Patterson Mill High School rank in MD?
Patterson Mill High School ranks #344 of 1,363 schools in MD.
What is Patterson Mill High School's MySchoolScout rating?
Patterson Mill High School has a current MySchoolScout rating of 7.7 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Patterson Mill High School?
Based on loaded state assessment records, Patterson Mill High School has 80% math proficiency (multi-year average, 2009-2025) and 82% reading/ELA proficiency (multi-year average, 2009-2025).
Is Patterson Mill High School a charter school?
No, Patterson Mill High School is not a charter school. It is a traditional public school operated by the local school district.
Is Patterson Mill High School a Title I school?
No, Patterson Mill High School is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Patterson Mill High School?
23.5% of students at Patterson Mill High School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
School factsNCES Common Core of Data (CCD) (SY 2023–24)
- Grades
- 9th – 12th
- Enrollment
- 826
- Student-Teacher Ratio
- 16.2:1
- Teachers (FTE)
- 51
- Type
- regular
- Setting
- Midsize Suburb
- County
- Harford County
- Chronic Absenteeism (SY 2022-23)
- 20.6%
- Phone
- (410) 638-4640
- 4-Year Graduation
- 95%+
- Area population (ZIP 21015)
- 30,451
- Area average commute
- 32.9 min
- Area median age
- 40.3
About this school's data
Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.
- School directory (enrollment, grades, staff, contact)
- NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
- Source period: SY 2023–24. A newer release may be available.
- MySchoolScout rating and rank
- MySchoolScout ranking model · Low confidence
- Vintage not available. Do not use this measure alone.
- Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
- Math proficiency
- State department of education · 2025 MCAP · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Reading/ELA proficiency
- State department of education · 2025 MCAP · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Student progress (growth)
- NCES EdFacts · Mixed source periods · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
- Neighborhood (income, housing, education)
- U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
- Older source: ACS 2019–2023 5-year estimates. Use as historical context.
- Reported for the ZCTA for ZIP 21015; this does not measure the attendance area.
- Programs (AP/IB, athletics, gifted)
- CRDC via Urban Institute · SY 2021–22 · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: SY 2021–22. A newer release may be available.
Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2025; directory SY 2023–24
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