Greenbrier Elementary School (Ranked Top 20% for 2025-26)

21222 San Mar Rd
Boonsboro, MD 21713

( shown in map)

Top 20%

Serving 250 students in grades Prekindergarten-5, Greenbrier Elementary 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 is 40-44% (which is higher than the Maryland state average of 27%). The percentage of students achieving is 65-69% (which is higher than the Maryland state average of 45%).

The student-teacher ratio of 16:1 is higher than the Maryland state level of 14:1.

Minority enrollment is 20% of the student body (majority Hispanic), which is lower than the Maryland state average of 68% (majority Black).

Quick Facts (2025-26)

Grades: Prekindergarten-5
Enrollment: 250 students
Student-Teacher Ratio: 16:1
Minority Enrollment: 20%
: Top 20% in MD
: 40-44% (Top 30%)
: 65-69% (Top 20%)
: 40-49% (Top 30%)
Source: National Center for Education Statistics (NCES), MD Dept. of Education

Top Rankings

Greenbrier Elementary School ranks among the top 20% of public schools in Maryland for:

School Overview

Greenbrier Elementary School's student population of 250 students has grown by 16% over five school years.

The teacher population of 16 teachers has grown by 14% over five school years.

Grades Offered

Grades Prekindergarten-5
(Supplemental Virtual)

View Data

Distribution of Students By Grade Trends
Grade	Greenbrier Elementary School
Pre-K	36
Kind	34
1	43
2	37
3	35
4	36
5	29

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Total Students

250 students

View Data

Total Students Trends Over Years (1987-2023)
Year	Greenbrier Elementary School
2023	256
2022	234
2021	220
2020	214
2019	214
2018	213
2017	213
2016	198
2015	173
2014	197
2013	199
2012	214
2011	255
2010	334
2009	320
2008	333
2007	340
2006	315
2005	308
2004	278
2003	292
2002	264
2001	268
2000	280
1999	303
1998	291
1997	291
1996	287
1995	275
1994	288
1993	292
1992	297
1991	279
1990	277
1989	256
1988	253
1987	219

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Gender %

Total Classroom Teachers

16 teachers

View Data

Total Classroom Teachers Trends Over Years (1987-2023)
Year	Greenbrier Elementary School
2023	15
2022	14
2021	15
2020	14
2019	14
2018	13
2017	13
2016	13
2015	13
2014	15
2013	14
2012	17
2011	21
2010	25
2009	23
2008	23
2007	21
2006	21
2005	18
2004	16
2003	16
2002	16
2001	15
2000	16
1999	14
1998	14
1997	14
1996	13
1995	13
1994	13
1993	13
1992	13
1991	15
1990	14
1989	13
1988	10
1987	12

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School Calendar

School Rankings

Greenbrier Elementary School ranks within the top 20% of all 1,338 schools in Maryland (based off of combined math and reading proficiency testing data).

The of Greenbrier Elementary School is 0.35, 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.

This School

State Level (MD)

#237 out of 1338 schools
(Top 20%)

View Data

Overall School Rank Trends Over Years (2012-2023)
Year	Greenbrier Elementary School
2023	#237
2022	#240
2021	#590
2019	#377
2018	#374
2017	#374
2016	#367
2015	#666
2014	#299
2013	#235
2012	#377

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40-44%

27%

View Data

Math Proficiency Comparison Over Years (2011-2023)
Year	Greenbrier Elementary School	Maryland	Washington County School District
2023	42%	27%	29%
2022	37%	25%	28%
2021	17%	20%	18%
2019	57%	38%	38%
2017	47%	41%	37%
2016	52%	42%	39%
2015	32%	38%	39%
2014	87%	72%	76%
2013	95%	79%	84%
2012	92%	82%	88%
2011	92%	80%	86%

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65-69%

45%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2010-2022)
Year	Greenbrier Elementary School	Maryland	Washington County School District
2022	67%	45%	49%
2021	27%	36%	33%
2019	52%	46%	50%
2017	57%	41%	37%
2016	62%	44%	42%
2015	42%	45%	41%
2014	92%	82%	82%
2013	92%	85%	85%
2012	92%	85%	87%
2011	92%	85%	87%
2010	95%	84%	85%

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40-49%

36%

View Data

Science Proficiency Comparison Over Years (2021-2022)
Year	Greenbrier Elementary School	Maryland	Washington County School District
2022	44%	36%	42%
2021	34%	41%	39%

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Student-Teacher Ratio

16:1

14:1

View Data

Student-Teacher Ratio Comparison Over Years (1987-2023)
Year	Greenbrier Elementary School	Maryland	Washington County School District
2023	17:1	14:1	15:1
2022	17:1	14:1	15:1
2021	15:1	14:1	15:1
2020	15:1	15:1	16:1
2019	15:1	15:1	16:1
2018	16:1	15:1	16:1
2017	16:1	15:1	16:1
2016	15:1	15:1	15:1
2015	13:1	15:1	15:1
2014	14:1	15:1	15:1
2013	14:1	15:1	15:1
2012	13:1	15:1	15:1
2011	12:1	15:1	15:1
2010	13:1	15:1	14:1
2009	14:1	15:1	15:1
2008	14:1	14:1	15:1
2007	16:1	15:1	16:1
2006	15:1	16:1	16:1
2005	17:1	16:1	16:1
2004	17:1	16:1	16:1
2003	18:1	16:1	15:1
2002	17:1	16:1	15:1
2001	18:1	17:1	16:1
2000	18:1	17:1	15:1
1999	22:1	18:1	17:1
1998	21:1	17:1	16:1
1997	21:1	17:1	16:1
1996	22:1	18:1	17:1
1995	21:1	17:1	17:1
1994	22:1	18:1	18:1
1993	22:1	18:1	17:1
1992	23:1	18:1	17:1
1991	19:1	18:1	18:1
1990	20:1	18:1	18:1
1989	20:1	18:1	18:1
1988	25:1	19:1	18:1
1987	18:1	19:1	18:1

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American Indian

n/a

Asian

View Data

Asian Student Percentage Comparison Over Years (1993-2023)
Year	Greenbrier Elementary School	Maryland	Washington County School District
2023	4%	7%	3%
2022	6%	7%	3%
2021	8%	7%	3%
2020	7%	7%	3%
2019	7%	7%	3%
2018	5%	7%	3%
2017	5%	7%	3%
2016	3%	7%	3%
2015	4%	7%	2%
2014	3%	6%	2%
2013	2%	6%	3%
2012	3%	7%	2%
2011	4%	6%	2%
2010	6%	7%	2%
2009	3%	6%	3%
2008	3%	6%	2%
2007	3%	6%	2%
2006	3%	5%	2%
2005	2%	5%	2%
2004	2%	5%	1%
2003	3%	5%	1%
2002	2%	5%	1%
2001	3%	5%	2%
2000	4%	4%	1%
1999	5%	4%	1%
1998	4%	4%	1%
1997	3%	4%	1%
1996	5%	4%	1%
1995	3%	4%	1%
1994	3%	4%	1%
1993	2%	4%	1%

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Hispanic

10%

23%

View Data

Hispanic Student Percentage Comparison Over Years (1996-2023)
Year	Greenbrier Elementary School	Maryland	Washington County School District
2023	6%	22%	15%
2022	6%	21%	14%
2021	5%	20%	13%
2020	3%	18%	11%
2019	3%	18%	11%
2018	8%	17%	9%
2017	8%	17%	9%
2016	6%	16%	7%
2015	6%	15%	7%
2014	4%	14%	6%
2013	5%	13%	6%
2012	3%	12%	6%
2011	4%	12%	6%
2010	5%	10%	4%
2009	3%	10%	4%
2008	3%	9%	4%
2007	2%	8%	4%
2006	2%	8%	3%
2005	1%	7%	2%
2004	1%	6%	2%
2003	1%	6%	2%
2002	1%	5%	2%
2001	2%	5%	1%
2000	3%	4%	1%
1999	2%	4%	1%
1998	1%	4%	1%
1997	2%	4%	1%
1996	1%	3%	1%

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Black

33%

View Data

Black Student Percentage Comparison Over Years (1995-2023)
Year	Greenbrier Elementary School	Maryland	Washington County School District
2023	3%	33%	16%
2022	4%	33%	15%
2021	5%	34%	14%
2020	5%	34%	14%
2019	5%	34%	14%
2018	3%	34%	13%
2017	3%	34%	13%
2014	2%	35%	13%
2013	3%	35%	12%
2012	4%	35%	12%
2011	5%	36%	12%
2010	6%	38%	15%
2009	7%	38%	13%
2008	8%	38%	13%
2007	8%	38%	12%
2006	4%	38%	11%
2005	4%	38%	10%
2004	1%	38%	10%
2003	1%	37%	9%
2002	1%	37%	8%
2001	2%	37%	7%
2000	2%	37%	7%
1999	1%	37%	6%
1998	1%	36%	6%
1995	1%	34%	5%

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White

80%

32%

View Data

White Student Percentage Comparison Over Years (1993-2023)
Year	Greenbrier Elementary School	Maryland	Washington County School District
2023	81%	33%	57%
2022	76%	34%	59%
2021	77%	34%	61%
2020	82%	36%	64%
2019	82%	36%	64%
2018	80%	38%	67%
2017	80%	38%	67%
2016	87%	39%	70%
2015	87%	40%	71%
2014	87%	41%	73%
2013	85%	42%	73%
2012	88%	42%	74%
2011	85%	43%	75%
2010	83%	45%	79%
2009	87%	46%	80%
2008	86%	47%	81%
2007	86%	48%	82%
2006	90%	49%	84%
2005	93%	50%	86%
2004	96%	51%	87%
2003	95%	52%	88%
2002	96%	53%	89%
2001	93%	53%	90%
2000	91%	55%	91%
1999	92%	55%	92%
1998	94%	56%	92%
1997	95%	57%	92%
1996	94%	58%	92%
1995	96%	59%	93%
1994	97%	59%	93%
1993	98%	60%	94%

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Hawaiian

n/a

Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2013-2023)
Year	Greenbrier Elementary School	Maryland	Washington County School District
2023	6%	5%	9%
2022	8%	5%	9%
2021	5%	5%	9%
2020	3%	5%	8%
2019	3%	5%	8%
2018	4%	4%	8%
2017	4%	4%	8%
2016	4%	4%	7%
2015	3%	4%	7%
2014	4%	4%	6%
2013	5%	4%	6%

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All Ethnic Groups

0.35

0.74

View Data

Diversity Score Comparison Over Years (1993-2023)
Year	Greenbrier Elementary School	Maryland	Washington County School District
2023	0.34	0.73	0.61
2022	0.41	0.73	0.59
2021	0.40	0.73	0.58
2020	0.32	0.72	0.54
2019	0.32	0.72	0.54
2018	0.35	0.72	0.50
2017	0.35	0.72	0.50
2016	0.24	0.71	0.48
2015	0.24	0.70	0.47
2014	0.25	0.69	0.45
2013	0.27	0.69	0.44
2012	0.22	0.69	0.43
2011	0.27	0.67	0.42
2010	0.30	0.65	0.36
2009	0.24	0.64	0.35
2008	0.25	0.63	0.33
2007	0.26	0.62	0.31
2006	0.18	0.61	0.28
2005	0.13	0.60	0.26
2004	0.08	0.60	0.24
2003	0.10	0.59	0.22
2002	0.08	0.58	0.21
2001	0.13	0.58	0.19
2000	0.16	0.56	0.17
1999	0.15	0.56	0.16
1998	0.12	0.56	0.15
1997	0.10	0.56	0.15
1996	0.12	0.55	0.14
1995	0.07	0.54	0.14
1994	0.06	0.54	0.14
1993	0.04	0.54	0.12

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Participates in the

Yes

Eligible for

31%

44%

View Data

Free Lunch Eligibility Comparison Over Years (1991-2023)
Year	Greenbrier Elementary School	Maryland	Washington County School District
2023	32%	46%	53%
2022	23%	38%	46%
2021	20%	40%	46%
2020	21%	41%	45%
2019	21%	41%	45%
2016	29%	40%	43%
2015	33%	39%	42%
2014	34%	38%	42%
2013	33%	36%	39%
2012	23%	36%	39%
2011	22%	33%	36%
2010	17%	31%	33%
2009	15%	27%	31%
2008	11%	26%	28%
2007	10%	25%	26%
2006	10%	25%	25%
2005	13%	25%	24%
2004	10%	24%	23%
2003	10%	24%	23%
2002	4%	23%	21%
2001	8%	23%	20%
2000	8%	24%	20%
1999	8%	25%	20%
1998	7%	26%	21%
1997	9%	26%	23%
1996	10%	26%	23%
1995	8%	26%	22%
1994	12%	25%	23%
1993	9%	21%	21%
1992	9%	21%	21%
1991	7%	18%	17%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2001-2023)
Year	Greenbrier Elementary School	Maryland	Washington County School District
2023	7%	4%	8%
2022	5%	4%	6%
2021	5%	5%	6%
2020	4%	6%	4%
2019	4%	6%	4%
2016	6%	5%	4%
2015	5%	6%	5%
2014	2%	6%	6%
2013	3%	6%	7%
2012	3%	6%	7%
2011	5%	7%	8%
2010	5%	7%	8%
2009	6%	8%	9%
2008	3%	8%	9%
2007	4%	7%	10%
2006	4%	7%	10%
2005	4%	7%	10%
2004	8%	7%	10%
2003	4%	7%	8%
2002	3%	7%	8%
2001	3%	7%	7%

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School Statewide Testing

School District Name

Washington County School District

Source: National Center for Education Statistics (NCES), MD Dept. of Education

Profile last updated: 02/09/2025

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Frequently Asked Questions

What is Greenbrier Elementary School's ranking?

Greenbrier Elementary School is ranked #237 out of 1,338 schools, which ranks it among the top 20% of public schools in Maryland.

What schools are Greenbrier Elementary School often compared to?

Greenbrier Elementary Schoolis often viewed alongside schools like Rockland Woods Elementary School, Boonsboro Elementary 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 65-69% of students have achieved reading proficiency (compared to the 45% MD state average).

How many students attend Greenbrier Elementary School?

250 students attend Greenbrier Elementary School.

What is the racial composition of the student body?

80% of Greenbrier Elementary School students are White, 10% of students are Hispanic, 4% of students are Asian, 4% of students are Two or more races, and 2% of students are Black.

What is the student-teacher ratio of Greenbrier Elementary School?

Greenbrier Elementary School has a student ration of 16:1, which is higher than the Maryland state average of 14:1.

What grades does Greenbrier Elementary School offer ?

Greenbrier Elementary School offers enrollment in grades Prekindergarten-5 (Supplemental Virtual).

What school district is Greenbrier Elementary School part of?

Greenbrier Elementary School is part of Washington County School District.