Average
#823 of 1,363 schools in MD
Old Mill High
High School · Anne Arundel County Public Schools · Millersville, MD
An Anne Arundel County Public Schools high school where students score 10 points below what's typical for similar communities.
600 Patriot Ln, Millersville, MD 21108
- Math 6% vs MD 30% (2025)
- Reading 59% vs MD 51% (2025)
- 94.0% 4-year graduation
Academics
Full Profile · 4/4 metricsView breakdown
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Students at Old Mill High score 32% proficient, which is below what's typical for similar communities (expected: 43%).
2025 MCAP proficiency
Most recent published year. School vs. MD average.
Trend
↓ DecliningProficiency has fallen 18 points since 2020, to 32% in 2025, across a 17-year record (2009–2025).
Show all 14 years
Multi-year averages used by the rating model: math 65% (multi-year average, 2009-2025) · reading/ELA 71% (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
45.4%
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 Old Mill High 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 8Car-Dependent
- Transit 19Minimal Transit
- Bike 34Somewhat Bikeable
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Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)
Median income
$146,556
Median home value
$543,200
Median rent
$2,030/mo
College educated
53.6%
Homeownership
87%
Poverty rate
3.5%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 21108; 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 |
|---|---|---|---|---|---|
| Ruth Parker Eason SchoolEnrollment path unverified | 2.5 | PK–12 | 0.3 mi | 150 | Compare → |
| Archbishop Spalding High SchoolPrivate · tuition | 4.2private | 9–12 | 0.9 mi | 1,304 | Compare → |
| Archbishop Spalding High SchoolPrivate · tuition | 4.8private | 9–12 | 0.9 mi | 1,292 | Compare → |
| Annapolis HighEnrollment path unverified | 6.7 | 9–12 | Not available | 2,089 | Compare → |
Distance is proximity only; it is not attendance eligibility.
Enrollment path unverified: Potential public school; its attendance or application path has not been classified.
Private · tuition: Potential private option; tuition and admission requirements have not been verified.
Public and private scores come from different models and are shown side by side, not blended into one ranking.
Anne Arundel County Public Schools
- Schools in district
- 126
- Rank in district
- #72 of 123
- District spending per student
- $17,624NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- 7.2%Census SAIPE · 2024
Old Mill High is listed in Anne Arundel County Public Schools; a district label does not verify attendance for an address.
About Old Mill High
Old Mill High is a public high school in Millersville, MD, part of Anne Arundel County Public Schools, serving approximately 2,489 students in grades 9th-12th with a 17.2:1 student-teacher ratio. It holds a MySchoolScout rating of 5.7 out of 10 and ranks #823 of 1,363 schools in MD. State assessment records show 65% math proficiency (multi-year average, 2009-2025) and 71% reading/ELA proficiency (multi-year average, 2009-2025).
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 ranks #823 of 1,363 schools in MD.
What is Old Mill High's MySchoolScout rating?
Old Mill High has a current MySchoolScout rating of 5.7 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 Old Mill High?
Based on loaded state assessment records, Old Mill High has 65% math proficiency (multi-year average, 2009-2025) and 71% reading/ELA proficiency (multi-year average, 2009-2025).
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.
School factsNCES Common Core of Data (CCD) (SY 2023–24)
- Grades
- 9th – 12th
- Enrollment
- 2,489
- Student-Teacher Ratio
- 17.2:1
- Teachers (FTE)
- 145
- Type
- regular
- Setting
- Large Suburb
- County
- Anne Arundel County
- Chronic Absenteeism (SY 2022-23)
- 33.9%
- Phone
- (410) 969-9010
- 4-Year Graduation
- 94.0%
- Area population (ZIP 21108)
- 17,894
- Area average commute
- 26.9 min
- Area median age
- 41.5
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 21108; 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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