Average
#1027 of 1,363 schools in MD
Old Mill High
High School · Anne Arundel County Public Schools
600 Patriot Ln, Millersville, MD 21108
Enrollment
2,489
Student-Teacher
17.2:1
Score
5.3
Grades
9th – 12th
Enrollment
2,489
Student-Teacher
17.2:1
Score
5.3
Grades
9th – 12th
Updated
2022-23
Updated 2022-23
How this school compares
In Millersville
#4 of 6
public schools
Maryland high schools
#103 of 226
In district
#97 of 123
Anne Arundel County Public Schools
About Old Mill High
Old Mill High serves 2,489 students in grades 9-12 in Millersville, Maryland, operating as a comprehensive public high school in Anne Arundel County. With 145 full-time equivalent teachers, the school maintains a student-teacher ratio of 17.2:1, providing reasonable class sizes for this large suburban institution. Academically, Old Mill High ranks in the middle tier of Maryland high schools at #722 out of 1,364 statewide, placing it in the 47th percentile with a MySchoolScout rating of 5.4 out of 10.
The school shows stronger performance in English Language Arts, where 54% of students achieve proficiency or above across grade levels, while mathematics presents opportunities for growth with 23% of students reaching proficiency standards. The school draws from an affluent community where the median household income reaches $142,001 and half of residents hold bachelor's degrees or higher. The surrounding ZIP code 21108 has a low poverty rate of 3.9%, with median home values of $527,700 reflecting the area's economic stability.
Located on Patriot Lane in this prosperous large suburban community of over 18,000 residents, Old Mill High serves families in one of Anne Arundel County's well-established neighborhoods.
What Parents Should Know
Old Mill High is a large school with 2,489 students enrolled. Larger schools typically offer a wider range of academic programs, electives, and extracurricular activities. Parents may want to ask about how the school maintains a sense of community and ensures students don't get lost in the crowd.
Score Breakdown
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Old Mill High — Students at Old Mill High score 32% proficient, which is below what's typical for similar communities (expected: 45%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
45.4%
Students qualifying for federal meal assistance
Test Scores MD MCAP (2024-25)
Based on 8 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: 3.0/10.
How Old Mill High Compares
See how Old Mill High performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2020-21 · Source: CRDC via Urban Institute · Learn more
Performance Trends
Math proficiency has declined from 39% (2019) to 6.2% (2025). Reading/ELA proficiency has improved from 50% (2019) to 58.6% (2025).
Location
600 Patriot Ln, Millersville, MD 21108
Nearby Alternatives
Families considering Old Mill High may also want to explore other high schools in the area. ARCHBISHOP SPALDING HIGH SCHOOL (rated 4.8/10, 0.9 miles away, in nearby Severn), with a comparable rating. Another option is Glen Burnie High (rated 4.3/10, 2.6 miles away, in nearby Glen Burnie), with a comparable rating. Additionally, ARCHBISHOP SPALDING HIGH SCHOOL (rated 4.2/10, 0.9 miles away, in nearby Severn), a more accessible option. For more schools in Millersville, see our Millersville schools guide .
Nearby Schools
20 within 2.6 mi| School | Distance | Rating |
|---|---|---|
| Old Mill Middle North Millersville | 0.1 mi | 6.8 |
| Old Mill Middle South Millersville | 0.1 mi | 4.7 |
| Ruth Parker Eason School Millersville | 0.3 mi | 4.3 |
| Rippling Woods Elementary Glen Burnie | 0.4 mi | 7.3 |
| Southgate Elementary Glen Burnie | 0.8 mi | 5.6 |
| ARCHBISHOP SPALDING HIGH SCHOOL Severn | 0.9 mi | 4.2 |
| ARCHBISHOP SPALDING HIGH SCHOOL Severn | 0.9 mi | 4.8 |
| Glen Burnie Park Elementary Glen Burnie | 1.3 mi | 8.8 |
| ST PAULS LUTHERAN SCHOOL Glen Burnie | 1.4 mi | 8.1 |
| Oakwood Elementary Glen Burnie | 1.5 mi | 5.5 |
| Woodside Elementary Glen Burnie | 1.5 mi | 7.9 |
| Shipley's Choice Elementary Millersville | 1.7 mi | 5.9 |
| Quarterfield Elementary Severn | 1.6 mi | 6.9 |
| HIGH ROAD SCHOOL OF ANNE ARUNDEL COUNTY Millersville | 2.0 mi | 7.5 |
| Corkran Middle School Glen Burnie | 2.3 mi | 5.5 |
| ELVATON CHRISTIAN ACADEMY Millersville | 1.8 mi | 6.0 |
| CALVARY BAPTIST CHURCH ACADEMY Glen Burnie | 2.1 mi | 6.9 |
| Richard Henry Lee Elementary Glen Burnie | 2.6 mi | 7.2 |
| Marley Glen School Glen Burnie | 2.2 mi | 4.3 |
| Glen Burnie High Glen Burnie | 2.6 mi | 4.3 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 21108 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$146,556
Median Home Value
$543,200
Median Rent
$2,030/mo
Population
17,894
College Educated
53.6%
Homeownership
87%
Avg Commute
26.9 min
Poverty Rate
3.5%
Median Age
41.5
Community Profile
The community surrounding Old Mill High has a median household income of $146,556. It is a well-educated community where 54% of adults hold a bachelor's degree or higher. The median home value in the area is $543,200, with a median rent of $2,030/month. The local poverty rate of 3.5% is relatively low. The average commute for residents is 27 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Atholton High Columbia, MD | 5.3 |
| Broadneck High Annapolis, MD | 5.3 |
| Crofton High School Gambrills, MD | 5.3 |
| Eleanor Roosevelt High Greenbelt, MD | 5.3 |
| Northwestern High Hyattsville, MD | 5.3 |
| Arundel High Gambrills, MD | 5.2 |
Frequently Asked Questions
Common questions about Old Mill High
What grades does Old Mill High serve?
Old Mill High serves students in grades 9th through 12th.
How many students attend Old Mill High?
Old Mill High has an enrollment of approximately 2,489 students.
What is the student-teacher ratio at Old Mill High?
The student-teacher ratio at Old Mill High is 17.2:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Old Mill High rank in MD?
Old Mill High is ranked #1027 out of 1,363 schools in MD.
What is Old Mill High's MySchoolScout rating?
Old Mill High has a composite rating of 5.3 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at Old Mill High?
Based on the most recent state assessment data, Old Mill High has 26.6% math proficiency and 56.2% reading/ELA proficiency.
Is Old Mill High a charter school?
No, Old Mill High is not a charter school. It is a traditional public school operated by the local school district.
Is Old Mill High a Title I school?
No, Old Mill High is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Old Mill High?
45.4% of students at Old Mill High qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
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Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 2,489
- Student-Teacher Ratio
- 17.2:1
- Teachers (FTE)
- 145
- Free/Reduced Lunch
- 45.4%
- Type
- regular
- Setting
- Large Suburb
- County
- Anne Arundel County
- Phone
- (410) 969-9010
- Data Year
- 2023–2024
Resources & Links
District
Anne Arundel County Public Schools- District Enrollment
- 84,346
- Schools in District
- 126
- Per-Pupil Spending
- $17,624
- District Rank
- #97 of 123
Other Schools in This District
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
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