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If you could change one rule at Old Mill High, what would it be?
Community prompt from u/allk12. Replies below.
Enrollment
1,832
High
DISTRICT 1,613 · STATE 1,185
SCHOOL COMMUNITY·ANNE ARUNDEL COUNTY PUBLIC SCHOOLS·NCES 240006000109
Old Mill High
600 Patriot Ln, Millersville, MD 21108 · (410) 969-9010 · Anne Arundel County
GRADES 09–12HIGH21-SUBURBTITLE IREGULAR SCHOOL1,832 STUDENTS
B
allk12 Grade
Scored higher than 64% of Maryland public high schools
- B-Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- B+Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Maryland public high schools
Student : Teacher
15.7:1
117 FTE teachers
DISTRICT 16.2:1 · STATE 15.3:1
Free / Reduced Lunch
56%
1,026 students
DISTRICT 46% · STATE 54%
Community
5
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 489 | 27% |
| Grade 10 | 461 | 25% |
| Grade 11 | 424 | 23% |
| Grade 12 | 458 | 25% |
Student demographics
73%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 70% · STATE 73% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
MCAP 2024-25 . % Proficient (Levels 3-4)English Language Arts
58.6%
MD avg 50.6% . +1.8pp since 2023
Math
11.0%
MD avg 34.8% . -0.7pp since 2023
What this means: On the MCAP, Maryland's statewide test, about 59 of every 100 students at this school read and write at grade level and about 11 of 100 do math at grade level. Across all Maryland schools, those numbers are about 51 and 35. Reading and writing scores are up about 2 points since 2023, while math scores have held steady.
MCAP results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 58.6% | 11.0% |
| 2023-24 | 56.8% | 11.7% |
% Proficient (Levels 3-4), all students and all tested grades.
Source: MCAP. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
34.5%
composite math + reading, all grades
Predicted
41.1%
based on MD schools with similar FRL share
Beats by
-6.5pp
below demographic expectation
What this means: About 35% of students here test proficient in math and reading, compared with the roughly 41% typical for Maryland schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Maryland's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Old Mill High
Old Mill High's state test result (34.5% proficient) is higher than 4 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Old Mill High this school | 1,832 | 56.0% | 34.5% |
| Parkville High Baltimore | 1,877 | 56.1% | 23.3% |
| Glen Burnie High Glen Burnie | 2,226 | 61.3% | 31.2% |
| Great Mills High Great Mills | 1,697 | 57.5% | 32.1% |
| James M. Bennett High Salisbury | 1,474 | 54.3% | 27.9% |
| North Hagerstown High Hagerstown | 1,583 | 58.2% | 39.9% |
Matched among Maryland high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Old Mill High ranks
Among high schools| Measure | This school | In Maryland | In Anne Arundel County |
|---|---|---|---|
| State test proficiency ranked highest first | 34.5% | #108 of 203 | #9 of 13 |
| Math proficiency ranked highest first | 11.0% | #102 of 206 ▼ 8 | #10 of 13 ▼ 2 |
| Reading proficiency ranked highest first | 58.6% | #103 of 206 ▼ 6 | #10 of 13 ▼ 1 |
| Enrollment ranked largest first | 1,832 | #47 of 234 | #8 of 17 |
| Students per teacher ranked fewest first | 15.7:1 | #83 of 210 | #3 of 14 |
| Diversity index ranked most diverse first | 72.6% | #17 of 211 | #3 of 15 |
| Free and reduced lunch ranked highest share first | 56.0% | #87 of 212 | #4 of 15 |
| Enrollment change since 2017-18 ranked steepest decline first | -17.8% | #9 of 76 | #3 of 7 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
1,832
-532 (-23%) vs 2020
-11% since 1990-91, when it was 2,053
Student : Teacher
15.7:1
was 16.9:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 1,832 | 116.5 | 15.7:1 | 56% (1,026) |
| 2023-24 | 2,489 | 145 | 17.2:1 | 45% (1,131) |
| 2022-23 | 2,445 | 144 | 17.0:1 | 48% (1,176) |
| 2020-21 | 2,364 | 140 | 16.9:1 | 41% (977) |
| 2017-18 | 2,230 | 130.4 | 17.1:1 | 34% (752) |
| 2015-16 | 2,126 | 124 | 17.1:1 | 34% (722) |
| 2010-11 | 2,266 | 140 | 16.2:1 | 25% (567) |
| 2000-01 | 2,264 | 114 | 19.9:1 | 6% (134) |
| 1990-91 | 2,053 | 109 | 18.8:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Old Mill High.
Since 2017-18: students down 18% (2,230 to 1,832); teachers down 11% (130.4 to 116.5).
About Old Mill High
Among the schools in Millersville, Maryland, is Old Mill High, a large high school. Its enrollment is 1,832 students, spread over grades 9 through 12. High schools in Maryland average about 1,185 students, which makes this school 55% above average.
Old Mill High falls under Anne Arundel County Public Schools, which has 125 schools enrolling 85,029 students.
Black students account for 36% of enrollment at Old Mill High, more than any other group. Other students are 27% White, 25% Hispanic, 7% multiracial, and 4% Asian. By comparison, Anne Arundel County residents are about 18% Black. Measured by the diversity index, the student body scores 73%.
Staffing at Old Mill High comes to 116.5 full-time-equivalent teachers, or 15.7:1. That is in line with the 15.3:1 average for high schools in Maryland. Old Mill High counts 56% of students as eligible for free or reduced-price lunch. The rate at public schools in Anne Arundel County averages 42%, lower than here.
On the allk12 Grade, Old Mill High lands at B, ahead of 64% of Maryland public high schools.
A school with Old Mill High's lunch-eligibility share in Maryland is predicted to score 41.1%. Old Mill High scores 34.5%, 6.5 points below that line.
In Anne Arundel County, where the school is located, median household income comes to about $124,911, about 46% of adults have at least a bachelor's degree, and the poverty rate is about 4%. The county has 129 public schools and about 85,074 students.
Old Mill Middle North is about 0.1 miles away, making it the nearest public school. Old Mill High is one of several public schools in the area, with at least 8 others within five miles. Ranking the closest schools with test data puts Old Mill High at 4th of 7.
The school's setting, by NCES definition, is Suburb: Large: in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Enrollment in 2024-25 stood at 1,832, compared with 2,364 in 2020-21. Over the same period, the student-to-teacher ratio dropped to 15.7:1, from 16.9:1.
On allk12, people connected to Old Mill High can post about pickup and drop-off, after-school programs, and teacher feedback. Members of the school community can share what they know.
Anne Arundel County at a glance
View full county profilePopulation
598,166
Census ACS
Median income
$124,911
Household, ACS
Bachelor's+
46%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
129
85,074 students
Quick facts
Related schools
Other schools in Anne Arundel County Public Schools
- Glen Burnie HighHigh · 2,226 students
- North County HighHigh · 2,161 students
- Broadneck HighHigh · 2,143 students
- Annapolis HighHigh · 2,075 students
- Meade HighHigh · 2,045 students
- Crofton High SchoolHigh · 1,906 students
Other schools in Millersville
- Old Mill Middle SouthMiddle · 1,173 students
- Old Mill Middle NorthMiddle · 958 students
- Millersville ElementaryElementary · 386 students
- Shipley's Choice ElementaryElementary · 344 students
- Ruth Parker Eason SchoolCombined · 128 students
Nearby schools
- Old Mill Middle North0.1 mi · 958
- Ruth Parker Eason School0.3 mi · 128
- Rippling Woods Elementary0.4 mi · 702
- Old Mill Middle South0.6 mi · 1,173
- Severn Run High School0.8 mi · 1,608
- Southgate Elementary0.8 mi · 573
Frequently asked questions
About Old Mill HighHow many students attend Old Mill High?
Old Mill High enrolls approximately 1,832 students in grades 09-12.
What age range does Old Mill High serve?
Old Mill High serves students from grade 09 through grade 12.
How many teachers does Old Mill High have?
Old Mill High employs 117 FTE teachers, for a student-to-teacher ratio of 15.7:1.
What is the student diversity at Old Mill High?
Student demographics at Old Mill High are roughly 27% White, 25% Hispanic, 36% Black, 4% Asian, 7% Two or more.
Who oversees Old Mill High?
Old Mill High is overseen by Anne Arundel County Public Schools in Anne Arundel County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.