Very Good
#344 of 1,363 schools in MD
Top 25% in state
Patterson Mill High School
High School · Harford County Public Schools
85 Patterson Mill Rd, Bel Air, MD 21015
Enrollment
826
Student-Teacher
16.2:1
Score
7.7
Grades
9th – 12th
Enrollment
826
Student-Teacher
16.2:1
Score
7.7
Grades
9th – 12th
Data vintage
2022-23
Data vintage2022-23
How this school compares
Maryland schools
#344 of 1,363
In Bel Air
#10 of 16
public schools
In district
#19 of 55
Harford County Public Schools
Academic growth
8.4 / 10
Excellent
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Patterson Mill High School
High School in Bel Air · grades 9th – 12th. Start here, then compare fit against nearby and district options.
Patterson Mill Middle School
0.0 mi away. Use as a geographic alternative in the same move search.
Emmorton Baptist Academy
0.5 mi away. Use as a geographic alternative in the same move search.
About Patterson Mill High School
Patterson Mill High School is a public high school in Bel Air, MD, part of Harford County Public Schools. Patterson Mill High School serves approximately 826 students, and covers grades 9th-12th, and has a 16.2:1 student-teacher ratio. Patterson Mill High School has a current MySchoolScout rating of 7.7 out of 10 and ranks #344 of 1,363 schools in MD.
Structured state assessment records for Patterson Mill High School show 80% math proficiency (multi-year average, 2009-2025) and 82% reading/ELA proficiency (multi-year average, 2009-2025).
- This school 7.7 · Very Good
- District avg 6.8
- MD avg 6.1
Score Breakdown
Full Profile · 4/4 metricsView breakdown
View breakdown
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Patterson Mill High School — Students at Patterson Mill High School score 46% proficient, which is below what's typical for similar communities (expected: 57%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
23.5%
Students qualifying for federal meal assistance
Test Scores MD MCAP (2024-25)
Based on 28 test records from MD state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 8.4/10.
How Patterson Mill High School Compares
See how Patterson Mill High School performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more
Location
85 Patterson Mill Rd, Bel Air, MD 21015
Nearby Alternatives
Families considering Patterson Mill High School may also want to explore other high schools in the area. Bel Air High (rated 7.6/10, 2.1 miles away), with a very similar rating. Another option is C. Milton Wright High (rated 7.3/10, 3.8 miles away), with a comparable rating. Additionally, JOHN CARROLL SCHOOL (rated 5.0/10, 2.2 miles away), a more accessible option. For more schools in Bel Air, see our Bel Air schools guide .
Nearby Schools
20 within 3.3 mi| School | Distance | Rating |
|---|---|---|
| Patterson Mill Middle School Bel Air | 0.0 mi | 7.0 |
| EMMORTON BAPTIST ACADEMY Bel Air | 0.5 mi | 5.7 |
| Ring Factory Elementary Bel Air | 0.6 mi | 8.4 |
| Emmorton Elementary Bel Air | 1.4 mi | 7.8 |
| Homestead/Wakefield Elementary Bel Air | 1.5 mi | 8.3 |
| Bel Air Middle Bel Air | 1.8 mi | 7.4 |
| Abingdon Elementary Abingdon | 2.1 mi | 6.8 |
| William S. James Elementary Abingdon | 2.0 mi | 6.5 |
| JOHN CARROLL SCHOOL Bel Air | 2.2 mi | 5.0 |
| Bel Air High Bel Air | 2.1 mi | 7.6 |
| Fountain Green Elementary Bel Air | 2.6 mi | 8.8 |
| Southampton Middle Bel Air | 2.8 mi | 7.6 |
| Bel Air Elementary Bel Air | 2.6 mi | 9.0 |
| ST MARGARET SCHOOL Bel Air | 2.7 mi | 3.8 |
| HARFORD DAY SCHOOL Bel Air | 3.1 mi | 7.1 |
| C. Milton Wright High Bel Air | 3.8 mi | 7.3 |
| Prospect Mill Elementary Bel Air | 3.8 mi | 8.6 |
| GRACE CLASSICAL ACADEMY Bel Air | 3.2 mi | 5.6 |
| Harford Academy at Campus Hills Bel Air | 4.0 mi | 2.8 |
| THE HIGHLANDS SCHOOL Bel Air | 3.3 mi | 6.3 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 21015 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$137,219
Median Home Value
$418,400
Median Rent
$1,730/mo
Population
30,451
College Educated
52.2%
Homeownership
90.5%
Avg Commute
32.9 min
Poverty Rate
4.8%
Median Age
40.3
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Bohemia Manor High Chesapeake City, MD | 7.7 |
| Harford Technical High Bel Air, MD | 7.7 |
| Mardela Middle & High Mardela Springs, MD | 7.7 |
| Century High Sykesville, MD | 7.6 |
| Boonsboro High Boonsboro, MD | 7.9 |
| Fallston High Fallston, MD | 7.5 |
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.
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Neighborhood Context
Powered by 
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 826
- Student-Teacher Ratio
- 16.2:1
- Teachers (FTE)
- 51
- Free/Reduced Lunch
- 23.5%
- Type
- regular
- Setting
- Midsize Suburb
- County
- Harford County
- Chronic Absenteeism (SY 2022-23)
- 20.6%
- Phone
- (410) 638-4640
- 4-Year Graduation
- 95%+
Resources & Links
District
Harford County Public Schools- District Enrollment
- 38,105
- Schools in District
- 55
- Per-Pupil Spending
- $17,493
- District Rank
- #19 of 55
Other Schools in This District
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