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Patterson Mill High School

Q: Is Patterson Mill High School a good school?

Patterson Mill High School ranks 52 nd of 220 Maryland high schools. SchoolDigger rates this school 4 stars out of 5.

Public Grades 9-12

52^nd

SchoolDigger Rank ?

of 220 Maryland High Schools

Better than 76% of Maryland high schools

Summary

Patterson Mill High School is a public high school located in Bel Air, Maryland, serving grades 9-12 with a total enrollment of 826 students. The school is part of the Harford County Public Schools district, which is ranked 10th out of 25 districts in Maryland and has a 3-star rating from SchoolDigger.

Patterson Mill High School consistently ranks among the top high schools in Maryland, with rankings ranging from 12th to 108th out of 225-233 schools over the past 10 years. The school's performance on MCAP (Maryland Comprehensive Assessment Program) tests is generally higher than the Harford County and Maryland state averages in English Language Arts (ELA), with 71.8% of 10th-grade students proficient or better in 2024-2025, compared to 62.4% in Harford County and 59.5% statewide. However, the school's performance in Mathematics is lower than the district and state averages, with only 19.6% of students proficient or better in 2024-2025, compared to 28.4% in Harford County and 26.5% statewide.

Patterson Mill High School has experienced relatively high chronic absenteeism rates, ranging from 17.2% to 29.0% over the past few years, which are higher than the district and state averages. The percentage of students receiving free or reduced-price lunch at the school has also increased from 17.46% in 2021-2022 to 24.18% in 2022-2023, indicating a growing population of economically disadvantaged students. While Patterson Mill High School generally outperforms nearby schools like Havre de Grace High, Aberdeen High, and Joppatowne High in academic performance, some schools like Fallston High, C. Milton Wright High, and Bel Air High have comparable or even higher academic performance in certain subject areas.

839

Students ?

17.0

Student/teacher ratio ?

$18,348

Per pupil spending ?

23.7%

Free/discounted lunch ?

85 Patterson Mill Rd
Bel Air, MD 21015

(410) 638-4640

District: Harford County Public Schools

Feeder schools for Patterson Mill High School:

Elementary:	Ring Factory Elementary
Middle:	Patterson Mill Middle School

Racial breakdown:

White:

67.8%

Hispanic:

9.4%

African American:

8.2%

See top rated Maryland high schools

Compare Patterson Mill High School to nearby high schools!

At a glance

▲ Ranking trend: Rebounding — 39th percentile in 2024 → 76th in 2025

Strengths

✓Ranks in the top 24% of Maryland high schools

✓Ranking is rebounding — up to 76th (2025) from a 39th-percentile low (2024)

Worth a look

!Geometry scores 23 pts below the Maryland average

Students meeting standards (2024-2025) ?

This school35%

District avg40%

Maryland avg37%

52^nd of 220

Maryland public high schools ?

Top 24%▼ down 18 pts since 2015

From top 5% (2015) to top 24% (2025)

See the entire ranking list of Maryland High Schools →

★★★★★

SchoolDigger rating ?

3^rd of 11High Schools in the Harford County Public Schools

10^th of 25Harford County Public Schools among Maryland districts

Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Maryland percentile	Rating
2025	54.6	52 of 220	76.4%	★★★★☆
2024	39.8	89 of 146	39.0%	★★☆☆☆
2023	62.0	28 of 127	78.0%	★★★★☆
2022	41.1	108 of 225	52.0%	★★★☆☆
2019	67.7	31 of 138	77.5%	★★★★☆
2018	56.5	61 of 197	69.0%	★★★☆☆
2017	68.1	33 of 180	81.7%	★★★★☆
2016	67.4	57 of 233	75.5%	★★★★☆
2015	80.2	12 of 233	94.8%	★★★★★
2014	80.1	34 of 231	85.3%	★★★★☆
2013	77.1	36 of 185	80.5%	★★★★☆
2012	78.9	33 of 187	82.4%	★★★★☆
2011	78.5	32 of 183	82.5%	★★★★☆
2010	79.0	37 of 220	83.2%	★★★★☆

By subject vs Maryland (2024-2025) ?

English Language Arts72%+21 vs state

Algebra II53%+28 vs state

Mathematics20%-7 vs state

Algebra I13%-8 vs state

Geometry5%-23 vs state

1.0

2 ratings · 1 written review

5★0

4★0

3★0

2★0

1★2

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What people are saying

by a student
Sunday, December 19, 2021

Pathetic, mismanaged place, cramming 2 schools into barely enough space for one, and proceeding to fill it with largely incompetent instructors and bumbling administration (with a few exceptions) Close Quote

Schools Near Patterson Mill High School

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Finance All

School													Students/Teachers											Ranking (2025)				Ranking (2024)				MCAP Mathematics (2025)				MCAP English Language Arts (2025)					MCAP Algebra I (2025)	MCAP Algebra II (2025)	MCAP Geometry (2025)	MCAP Science (2025)	MCAP Social Studies (2025)	Per Pupil Expenditures (2024)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	Rank Change from Previous Year	MCAP Mathematics 6th Grade	MCAP Mathematics 7th Grade	MCAP Mathematics 8th Grade	MCAP Mathematics All Grades	MCAP English Language Arts 6th Grade	MCAP English Language Arts 7th Grade	MCAP English Language Arts 8th Grade	MCAP English Language Arts 10th Grade	MCAP English Language Arts All Grades	MCAP Algebra I End of Course	MCAP Algebra II End of Course	MCAP Geometry End of Course	MCAP Science 8th Grade	MCAP Social Studies 8th Grade	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Patterson Mill High School	Public	9-12	85 Patterson Mill Rd	Bel Air	21015	Harford County	Harford County Public Schools	No	No	No	No	(410) 638-4640	839	49	17.0	23.7%	569 (67.8%)	69 (8.2%)	79 (9.4%)	57 (6.8%)	3 (0.4%)	2 (0.2%)	60 (7.2%)	54.6	52^nd of 220 public high schools	76.4%		39.8	89^th of 146 public high schools	39.0%	37				19.6				71.8	71.8	13.0	52.6	4.8			$18,348	$1,384	$16,964
Bel Air High	Public	9-12	100 Heighe St	Bel Air	21014	Harford County	Harford County Public Schools	No	No	No	No	(410) 638-4600	1,341	87	15.5	22.7%	897 (66.9%)	151 (11.3%)	129 (9.6%)	103 (7.7%)	2 (0.1%)	1 (0.1%)	55 (4.1%)	54.2	54^th of 220 public high schools	75.5%		50.5	56^th of 146 public high schools	61.6%	2				20.5				74.4	74.4	20.0	49.1	5.1			$16,287	$1,327	$14,960
C. Milton Wright High	Public	9-12	1301 N Fountain Green Rd	Bel Air	21015	Harford County	Harford County Public Schools	No	No	No	No	(410) 638-4110	1,291	80	16.2	25.3%	975 (75.5%)	99 (7.7%)	81 (6.3%)	63 (4.9%)	3 (0.2%)	1 (0.1%)	66 (5.1%)	47.6	81^st of 220 public high schools	63.2%		34.7	109^th of 146 public high schools	25.3%	28				16.8				67.5	67.5	11.7	52.9	11.3			$16,355	$1,151	$15,204
Harford Technical High	Public, Magnet	9-12	200 Thomas Run Rd	Bel Air	21015	Harford County	Harford County Public Schools	No	Yes	No	No	(410) 638-3804	954	58	16.4	20.9%	676 (70.9%)	136 (14.3%)	63 (6.6%)	25 (2.6%)	4 (0.4%)	1 (0.1%)	47 (4.9%)	56	47^th of 220 public high schools	78.6%		45.6	69^th of 146 public high schools	52.7%	22				23.8				74.9	74.9	21.3	54.7	8.5			$16,393	$1,071	$15,322
Fallston High	Public	9-12	2301 Carrs Mill Rd	Fallston	21047	Harford County	Harford County Public Schools	No	No	No	No	(410) 638-4120	1,036	62	16.8	15.4%	850 (82.0%)	60 (5.8%)	46 (4.4%)	29 (2.8%)	1 (0.1%)	1 (0.1%)	47 (4.5%)	54.7	50^th of 220 public high schools	77.3%		44.7	75^th of 146 public high schools	48.6%	25				12.3				77.3	77.3	3.5	45.5	13.4			$16,666	$1,304	$15,362
Edgewood High	Public, Magnet	9-12	2415 Willoughby Beach Rd	Edgewood	21040	Harford County	Harford County Public Schools	No	Yes	No	No	(410) 612-1500	1,440	96	15.0	59.4%	375 (26.0%)	673 (46.7%)	235 (16.3%)	39 (2.7%)	7 (0.5%)	1 (0.1%)	110 (7.6%)	34.6	124^th of 220 public high schools	43.6%		21.9	132^nd of 146 public high schools	9.6%	8				14.0				52.2	52.2	13.6	24.0	4.0			$16,600	$1,544	$15,055
Joppatowne High	Public, Magnet	9-12	555 Joppa Farm Rd	Joppa	21085	Harford County	Harford County Public Schools	No	Yes	No	No	(410) 612-1510	882	56	15.8	65.5%	198 (22.4%)	459 (52.0%)	122 (13.8%)	21 (2.4%)	1 (0.1%)	5 (0.6%)	76 (8.6%)	18.8	175^th of 220 public high schools	20.5%					(n/a)				3.9				38.1	38.1	4.0	5.6	0.0			$17,351	$1,941	$15,410
Aberdeen High	Public, Magnet	9-12	251 Paradise Rd	Aberdeen	21001	Harford County	Harford County Public Schools	No	Yes	No	No	(410) 273-5500	1,396	99	14.1	51.6%	404 (28.9%)	575 (41.2%)	210 (15.0%)	65 (4.7%)	5 (0.4%)	1 (0.1%)	135 (9.7%)	36.9	118^th of 220 public high schools	46.4%		22.7	130^th of 146 public high schools	11.0%	12				14.2				54.7	54.7	8.9	56.3	0.0			$16,192	$1,452	$14,741
Center for Educational Opportunity	Public, Virtual	6-12	253 Paradise Rd	Aberdeen	21001	Harford County	Harford County Public Schools	No	No	Yes	No	(410) 273-5594	122	19	6.5	66.4%	52 (42.6%)	39 (32.0%)	15 (12.3%)	2 (1.6%)	1 (0.8%)	0 (0.0%)	13 (10.7%)	15.4	194^th of 220 public high schools	11.8%					(n/a)	0.0	0.0	0.0	1.7	28.0	14.6	20.5	29.8	23.5	4.5			9.1	16.7
Perry Hall High	Public	9-12	4601 Ebenezer Rd	Baltimore	21236	Baltimore County	Baltimore County Public Schools	No	No	No	No	(443) 809-5108	2,012	118	17.0	46.4%	716 (35.6%)	768 (38.2%)	129 (6.4%)	290 (14.4%)	8 (0.4%)	5 (0.2%)	96 (4.8%)	28.9	140^th of 220 public high schools	36.4%		35.8	101^st of 146 public high schools	30.8%	39				4.5				49.9	49.9	4.0	9.8	2.7			$16,693	$1,185	$15,508

Frequently Asked Questions about Patterson Mill High School

Is Patterson Mill High School a good school?

Patterson Mill High School ranks 52^nd of 220 Maryland high schools. SchoolDigger rates this school 4 stars out of 5.

What district is Patterson Mill High School in?

Harford County Public Schools

What schools feed into Patterson Mill High School?

Patterson Mill High School is fed by the following schools:

Elementary : Ring Factory Elementary
Middle : Patterson Mill Middle School

What is the racial makeup of Patterson Mill High School?

Students at Patterson Mill High School are 68% White, 9% Hispanic, 8% African American, 7% Two or more races, 7% Asian.

How many students attend Patterson Mill High School?

In the 2024-25 school year, 839 students attended Patterson Mill High School.

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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Maryland State Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.