Enrollment
259
Elementary
DISTRICT 433 · STATE 481
SCHOOL COMMUNITY·WASHINGTON COUNTY PUBLIC SCHOOLS·NCES 240066001268
Greenbrier Elementary
21222 San Mar Rd, Boonsboro, MD 21713 · (301) 766-8170 · Washington County
GRADES PK–05ELEMENTARY41-RURALREGULAR SCHOOL259 STUDENTS
B
allk12 Grade
Scored higher than 61% of Maryland public elementary 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 elementary schools
Student : Teacher
16.1:1
16 FTE teachers
DISTRICT 15.1:1 · STATE 13.8:1
Free / Reduced Lunch
39%
101 students
DISTRICT 56% · STATE 54%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Pre-K | 38 | 15% |
| Kindergarten | 31 | 12% |
| Grade 1 | 37 | 14% |
| Grade 2 | 36 | 14% |
| Grade 3 | 36 | 14% |
| Grade 4 | 42 | 16% |
| Grade 5 | 39 | 15% |
This year's kindergarten class (31) is 21% smaller than its 5th grade class (39).
Student demographics
38%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 64% · 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
63.9%
MD avg 50.6% . +7.6pp since 2023
Math
44.5%
MD avg 34.8% . -9.3pp since 2023
What this means: On the MCAP, Maryland's statewide test, about 64 of every 100 students at this school read and write at grade level and about 45 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 8 points since 2023, while math scores are down about 9 points.
MCAP results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 63.9% | 44.5% |
| 2023-24 | 56.3% | 53.8% |
% 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
54.6%
composite math + reading, all grades
Predicted
51.1%
based on MD schools with similar FRL share
Beats by
+3.5pp
above demographic expectation
What this means: About 55% of students here test proficient in math and reading, compared with the roughly 51% 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 Greenbrier Elementary
Greenbrier Elementary's state test result (54.6% proficient) is higher than 2 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Greenbrier Elementary this school | 259 | 39.0% | 54.6% |
| Mechanicsville Elementary Mechanicsville | 273 | 36.6% | 52.1% |
| Dublin Elementary Street | 222 | 40.5% | 69.9% |
| Liberty Elementary Frederick | 265 | 32.8% | 54.5% |
| Frost Elementary Frostburg | 243 | 36.6% | 85.0% |
| Oakville Elementary Mechanicsville | 291 | 43.0% | 57.0% |
Matched among Maryland elementary 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 Greenbrier Elementary ranks
Among elementary schools| Measure | This school | In Maryland | In Washington County |
|---|---|---|---|
| State test proficiency ranked highest first | 54.6% | #278 of 853 | #7 of 24 |
| Math proficiency ranked highest first | 44.5% | #372 of 853 ▼ 126 | #14 of 24 ▼ 8 |
| Reading proficiency ranked highest first | 63.9% | #228 of 853 ▲ 59 | #7 of 24 ▲ 1 |
| Enrollment ranked largest first | 259 | #805 of 898 | #22 of 25 |
| Students per teacher ranked fewest first | 16.1:1 | #714 of 857 | #16 of 22 |
| Diversity index ranked most diverse first | 37.6% | #654 of 857 | #16 of 22 |
| Free and reduced lunch ranked highest share first | 39.0% | #629 of 885 | #23 of 25 |
| Enrollment change since 2017-18 ranked fastest growth first | +16.7% | #94 of 294 | #4 of 13 |
Ranked against other public elementary 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
259
+39 (+18%) vs 2020
-7% since 1990-91, when it was 279
Student : Teacher
16.1:1
was 14.7:1
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 | 259 | 16.1 | 16.1:1 | 39% (101) |
| 2023-24 | 250 | 16.1 | 15.5:1 | 39% (97) |
| 2022-23 | 256 | 15.4 | 16.7:1 | 39% (99) |
| 2020-21 | 220 | 15 | 14.7:1 | 25% (56) |
| 2017-18 | 222 | 14.7 | 15.1:1 | 26% (58) |
| 2015-16 | 198 | 13 | 15.2:1 | 36% (71) |
| 2010-11 | 255 | 21 | 12.1:1 | 27% (70) |
| 2000-01 | 268 | 15 | 17.9:1 | 11% (30) |
| 1990-91 | 279 | 15 | 18.6:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Greenbrier Elementary.
Since 2017-18: students up 17% (222 to 259); teachers up 9% (14.7 to 16.1).
About Greenbrier Elementary
The public elementary school Greenbrier Elementary is located in Boonsboro, Maryland. It has an enrollment of 259 students in pre-K through 5. On average, elementary schools in Maryland enroll around 481, and this school is 46% below that mark.
Greenbrier Elementary is run by Washington County Public Schools, whose 43 schools enroll 23,320 students.
The student body at Greenbrier Elementary is 78% White. The school is also 10% Hispanic, 6% multiracial, 3% Asian, and 2% Black. Among Washington County residents, the White share is about 75%. Its diversity index, the chance that two randomly chosen students belong to different racial or ethnic groups, is 38%.
Greenbrier Elementary has 16.1 full-time-equivalent teachers on staff and a student-to-teacher ratio of 16.1:1. Across elementary schools in Maryland, the average ratio is 13.8:1. The school has 39% of students eligible for free or reduced-price lunch. The gap from the 58% average for public schools in Washington County is 19 points.
On the allk12 Grade, Greenbrier Elementary lands at B, ahead of 61% of Maryland public elementary schools.
Greenbrier Elementary's actual average proficiency rate across its state test results (54.6%) and its predicted rate (51.1%) put it outside the top and bottom 10% of Maryland schools.
For the population of Washington County, median household income comes to about $77,747, 24% of adults hold a bachelor's degree or higher, and about 9% of people live in poverty. Washington County's 44 public schools enroll about 23,320 students and include Greenbrier Elementary.
About 3.0 miles separate Greenbrier Elementary from the closest public school, Boonsboro Middle. Other public schools within five miles: 5. The average proficiency across nearby scored schools is 57.9%; Greenbrier Elementary's is 54.6%, ranking 5th of 8.
The school's locale code, Rural: Fringe, means it is in rural territory close to an urban area.
In 2024-25, the school enrolled 259, up from 220 in 2020-21. The number of students per teacher increased from 14.7 to 16.1 over 4 years.
This page collects posts and questions about Greenbrier Elementary, such as fundraisers, report cards, and school supplies. Members of the school community can share what they know.
Washington County at a glance
View full county profilePopulation
155,709
Census ACS
Median income
$77,747
Household, ACS
Bachelor's+
24%
Adults 25+
Poverty rate
9%
Below federal line
Schools in county
44
23,320 students
Quick facts
Related schools
Other schools in Washington County Public Schools
- South Hagerstown HighHigh · 1,690 students
- North Hagerstown HighHigh · 1,583 students
- Williamsport HighHigh · 1,061 students
- Western Heights MiddleMiddle · 883 students
- E. Russell Hicks MiddleMiddle · 841 students
- Northern MiddleMiddle · 841 students
Other schools in Boonsboro
- Boonsboro HighHigh · 838 students
- Boonsboro MiddleMiddle · 673 students
- Boonsboro ElementaryElementary · 514 students
Other Greenbrier Elementary schools
7 other US public schools in 8 states are named Greenbrier Elementary. Greenbrier Elementary is the 8th largest of the 8.
- Greenbrier ElementaryGreenville, SC · 876 students
- Greenbrier Elementary SchoolEvans, GA · 610 students
- Greenbrier ElementaryGreenbrier, TN · 600 students
- Greenbrier Elementary SchoolGLENDALE, AZ · 452 students
- Greenbrier Elementary SchoolBaton Rouge, LA · 317 students
Nearby schools
- Boonsboro Middle3.0 mi · 673
- Boonsboro High3.1 mi · 838
- Boonsboro Elementary3.2 mi · 514
- Wolfsville Elementary4.3 mi · 163
- Myersville Elementary4.8 mi · 402
- Ruth Ann Monroe Primary5.6 mi · 579
Frequently asked questions
About Greenbrier ElementaryHow many students attend Greenbrier Elementary?
Greenbrier Elementary enrolls approximately 259 students in grades PK-05.
What age range does Greenbrier Elementary serve?
Greenbrier Elementary serves students from grade PK through grade 05.
What is the student-teacher ratio at Greenbrier Elementary?
The student-to-teacher ratio at Greenbrier Elementary is approximately 16.1:1 (16 FTE teachers).
What is the racial breakdown of students at Greenbrier Elementary?
At Greenbrier Elementary, the student body is approximately 78% White, 10% Hispanic, 2% Black, 3% Asian, 6% Two or more.
Is Greenbrier Elementary public or private?
Greenbrier Elementary is a public K-12 school, overseen by Washington County Public Schools.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.