Patterson Mill Middle and High School is a comprehensive middle and high school situated on a 78-acre campus just south of Bel Air, Maryland, United States. It is part of the Harford County Public Schools system.
Serving 839 students in grades 9-12, Patterson Mill High School ranks in the top 20% of all schools in Maryland for overall test scores (math proficiency is top 30%, and reading proficiency is top 30%).
The percentage of students achieving proficiency in math is 40-44% (which is higher than the Maryland state average of 27%). The percentage of students achieving proficiency in reading/language arts is 70-74% (which is higher than the Maryland state average of 45%).
The student-teacher ratio of 17:1 is higher than the Maryland state level of 14:1.
Minority enrollment is 32% of the student body (majority Hispanic and Black), which is lower than the Maryland state average of 69% (majority Black).
Quick Facts (26-27)
- Grades: 9-12
- Enrollment: 839 students
- Student-Teacher Ratio: 17:1
- Minority Enrollment: 32%
- Graduation Rate: 96% (Top 20% in MD)
- Overall Testing Rank: Top 20%
- Math Proficiency: 40-44% (Top 30%)
- Reading Proficiency: 70-74% (Top 10%)
- Science Proficiency: <50% (Top 20%)
- Attendance Zone: Patterson Mill High School serves the southern part of Bel Air, MD, covering an area of approximately 8.1 square miles. The typical drive to the school from within the attendance zone ranges from 5 to 10 minutes, with the furthest edge being about 2.7 miles away.
- Source: National Center for Education Statistics (NCES), MD Dept. of Education
Top Rankings
Patterson Mill High School ranks among the top 20% of public schools in Maryland for:
Category
Attribute
Overall Rank
Reading/Language Arts Proficiency
Science Proficiency
Graduation Rate
School Overview
Patterson Mill High School's student population of 839 students has stayed relatively flat over five school years.
The teacher population of 49 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
839 students
Showing 2016–2025. Full 18-year historical data available below ↓
Total Classroom Teachers
49 teachers
Showing 2016–2025. Full 18-year historical data available below ↓
Year Founded
2007
School Calendar
School Rankings
Patterson Mill High School ranks within the top 20% of all 1,338 schools in Maryland (based off of combined math and reading proficiency testing data).
The diversity score of Patterson Mill High School is 0.52, which is less than the diversity score at state average of 0.74. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#202 out of 1338 schools
(Top 20%)
(Top 20%)
Showing 2013–2023. Full 14-year historical data available below ↓
Math Test Scores (% Proficient)
40-44%
27%
Showing 2012–2023. Full 14-year historical data available below ↓
Reading/Language Arts Test Scores (% Proficient)
70-74%
45%
Showing 2011–2022. Full 13-year historical data available below ↓
Science Test Scores (% Proficient)
<50%
36%
Student-Teacher Ratio
17:1
14:1
Showing 2016–2025. Full 18-year historical data available below ↓
Asian
7%
7%
Showing 2016–2025. Full 18-year historical data available below ↓
Hispanic
10%
24%
Showing 2016–2025. Full 18-year historical data available below ↓
Black
8%
32%
Showing 2016–2025. Full 18-year historical data available below ↓
White
68%
31%
Showing 2016–2025. Full 18-year historical data available below ↓
Two or more races
7%
6%
Showing 2016–2025. Full 15-year historical data available below ↓
All Ethnic Groups
Showing 2016–2025. Full 18-year historical data available below ↓
Graduation Rate
96%
85.8%
Showing 2014–2023. Full 13-year historical data available below ↓
Chronically Absent Students
(22-23)20.3%
32.4%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
22%
46%
Showing 2015–2025. Full 12-year historical data available below ↓
Eligible for Reduced Lunch
2%
5%
Showing 2015–2025. Full 12-year historical data available below ↓
School Statewide Testing
School District Name
Sports
School Mascot
Huskies
Source: National Center for Education Statistics (NCES), MD Dept. of Education
Frequently Asked Questions
What is Patterson Mill High School's ranking?
Patterson Mill High School is ranked #202 out of 1,338 schools, which ranks it among the top 20% of public schools in Maryland.
What schools are Patterson Mill High School often compared to?
Patterson Mill High Schoolis often viewed alongside schools like Bel Air High School, C. Milton Wright High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
40-44% of students have achieved math proficiency (compared to the 27% MD state average), while 70-74% of students have achieved reading proficiency (compared to the 45% MD state average).
What is the graduation rate of Patterson Mill High School?
The graduation rate of Patterson Mill High School is 96%, which is higher than the Maryland state average of 85.8%.
How many students attend Patterson Mill High School?
839 students attend Patterson Mill High School.
What is the racial composition of the student body?
68% of Patterson Mill High School students are White, 10% of students are Hispanic, 8% of students are Black, 7% of students are Asian, and 7% of students are Two or more races.
What is the student-teacher ratio of Patterson Mill High School?
Patterson Mill High School has a student ration of 17:1, which is higher than the Maryland state average of 14:1.
What grades does Patterson Mill High School offer ?
Patterson Mill High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Patterson Mill High School part of?
Patterson Mill High School is part of Harford County School District.
School Reviews
2 10/10/2025
My kids attend this school because I cannot afford to send them to a private school. There are a number of very committed and qualified instructors there but they seem to be the exception and not the rule. The school is new and likely had to select most of its faculty from individuals whom C. Milton Wright and Bel Air rejected. I do think they are improving though.
3 10/10/2025
This is a fantastic high school under the leadership of Dr. Abel. I have three children who have all graduated in the last four years (2013-2016) from Patterson Mill and they were accepted to the colleges of their choice and satisfactorily prepared to tackle university level work. They participated in award winning music programs, state qualifying athletic teams and were pushed to do their best. Is every teacher a 10? No - there is no perfect school, but the faculty here have grown together over the last 10 years. Parents are super involved at this school and activities are packed - arrive early or it's standing room only. I love my neighborhood and the schools they attended, including Patterson Mill, Emmorton Elementary and Homestead Wakefield Elementary
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