Dedham High School (Ranked Top 20% for 2025-26)

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Dedham High School

140 Whiting Avenue
Dedham, MA 02026

( shown in map)

Top 20%

Dedham High School is a public high school in Dedham, Massachusetts, United States, and a part of the Dedham 51��s district. The school was founded in 1851 by the oldest public school system in the country.

Serving 731 students in grades 9-12, Dedham High School ranks in the top 20% of all schools in Massachusetts for overall test scores (math proficiency is top 20%, and reading proficiency is top 20%).

The percentage of students achieving is 65-69% (which is higher than the Massachusetts state average of 42%). The percentage of students achieving is 60-64% (which is higher than the Massachusetts state average of 44%).

The student-teacher ratio of 11:1 is lower than the Massachusetts state level of 12:1.

Minority enrollment is 35% of the student body (majority Hispanic), which is lower than the Massachusetts state average of 47% (majority Hispanic).

Quick Facts (2025-26)

Grades: 9-12
Enrollment: 731 students
Student-Teacher Ratio: 11:1
Minority Enrollment: 35%
: 90-94% (Top 50% in MA)
: Top 20%
: 65-69% (Top 20%)
: 60-64% (Top 20%)
: 55-59% (Top 30%)
Source: National Center for Education Statistics (NCES), MA Dept. of Education

Top Rankings

Dedham High School ranks among the top 20% of public schools in Massachusetts for:

School Overview

Dedham High School's student population of 731 students has stayed relatively flat over five school years.

The teacher population of 65 teachers has stayed relatively flat over five school years.

Grades Offered

Grades 9-12
(Supplemental Virtual)

View Data

Distribution of Students By Grade Trends
Grade	Dedham High School
9	176
10	185
11	198
12	167
Not Listed	5

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Total Students

731 students

View Data

Total Students Trends Over Years (1991-2023)
Year	Dedham High School
2023	715
2022	701
2021	690
2020	748
2019	748
2018	739
2017	739
2016	718
2015	700
2014	767
2013	765
2012	784
2011	803
2010	786
2009	773
2008	772
2007	779
2006	771
2005	990
2004	1,013
2003	984
2002	970
2001	964
2000	937
1999	928
1998	962
1997	919
1996	682
1995	672
1994	650
1993	663
1992	676
1991	679

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Gender %

Total Classroom Teachers

65 teachers

View Data

Total Classroom Teachers Trends Over Years (2005-2023)
Year	Dedham High School
2023	64
2022	61
2021	61
2020	65
2019	65
2018	65
2017	65
2016	65
2015	65
2014	64
2013	63
2012	67
2011	66
2010	64
2009	64
2008	61
2007	66
2006	84
2005	77

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Year Founded

1851

Colors

Grey, Maroon

School Calendar

School Rankings

Dedham High School ranks within the top 20% of all 1,626 schools in Massachusetts (based off of combined math and reading proficiency testing data).

The of Dedham High School is 0.54, which is less than the diversity score at state average of 0.65. The school's diversity has stayed relatively flat over five school years.

This School

State Level (MA)

#252 out of 1626 schools
(Top 20%)

View Data

Overall School Rank Trends Over Years (2012-2023)
Year	Dedham High School
2023	#252
2022	#252
2021	#174
2019	#477
2018	#111
2017	#63
2016	#56
2015	#60
2014	#58
2013	#126
2012	#143

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65-69%

42%

View Data

Math Proficiency Comparison Over Years (2012-2023)
Year	Dedham High School	Massachusetts	Dedham School District
2023	67%	42%	51%
2022	67%	41%	46%
2021	67%	37%	42%
2019	72%	51%	55%
2018	87%	52%	58%
2017	92%	53%	56%
2016	92%	64%	71%
2015	92%	61%	71%
2014	92%	61%	70%
2013	87%	61%	69%
2012	90%	59%	70%

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60-64%

44%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2011-2022)
Year	Dedham High School	Massachusetts	Dedham School District
2022	62%	44%	45%
2021	72%	49%	51%
2019	57%	54%	52%
2018	92%	56%	58%
2017	95%	54%	57%
2016	95%	71%	76%
2015	95%	69%	76%
2014	95%	69%	74%
2013	92%	69%	75%
2012	90%	69%	77%
2011	87%	70%	74%

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55-59%

44%

Student-Teacher Ratio

11:1

12:1

View Data

Student-Teacher Ratio Comparison Over Years (2005-2023)
Year	Dedham High School	Massachusetts	Dedham School District
2023	11:1	12:1	11:1
2022	11:1	12:1	11:1
2021	11:1	12:1	11:1
2020	12:1	13:1	12:1
2019	12:1	13:1	12:1
2018	11:1	13:1	12:1
2017	11:1	13:1	12:1
2016	11:1	13:1	12:1
2015	11:1	13:1	12:1
2014	12:1	14:1	12:1
2013	12:1	14:1	13:1
2012	12:1	14:1	12:1
2011	12:1	14:1	13:1
2010	12:1	14:1	13:1
2009	12:1	14:1	13:1
2008	13:1	14:1	13:1
2007	12:1	13:1	11:1
2006	9:1	13:1	12:1
2005	13:1	14:1	13:1

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American Indian

n/a

Asian

View Data

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

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Hispanic

17%

25%

View Data

Hispanic Student Percentage Comparison Over Years (1993-2023)
Year	Dedham High School	Massachusetts	Dedham School District
2023	17%	24%	17%
2022	18%	23%	17%
2021	15%	22%	16%
2020	16%	21%	16%
2019	16%	21%	16%
2018	14%	19%	15%
2017	14%	19%	15%
2016	14%	19%	14%
2015	14%	18%	13%
2014	12%	17%	12%
2013	10%	16%	10%
2012	10%	16%	10%
2011	10%	15%	10%
2010	9%	15%	9%
2009	9%	14%	8%
2008	8%	15%	7%
2007	9%	14%	7%
2006	8%	13%	7%
2005	5%	12%	5%
2004	4%	12%	4%
2003	5%	11%	4%
2002	4%	11%	4%
2001	4%	11%	3%
2000	4%	10%	3%
1999	4%	10%	3%
1998	4%	10%	3%
1997	2%	10%	3%
1996	2%	9%	2%
1995	2%	9%	2%
1994	2%	9%	2%
1993	1%	9%	2%

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Black

11%

10%

View Data

Black Student Percentage Comparison Over Years (1993-2023)
Year	Dedham High School	Massachusetts	Dedham School District
2023	10%	10%	8%
2022	9%	10%	7%
2021	8%	10%	7%
2020	9%	9%	7%
2019	9%	9%	7%
2018	12%	9%	8%
2017	12%	9%	8%
2016	11%	9%	8%
2015	10%	9%	7%
2014	10%	9%	7%
2013	10%	9%	7%
2012	9%	8%	7%
2011	8%	8%	6%
2010	8%	8%	7%
2009	8%	8%	6%
2008	7%	8%	6%
2007	6%	8%	5%
2006	5%	8%	5%
2005	5%	9%	4%
2004	5%	9%	4%
2003	3%	9%	3%
2002	3%	9%	3%
2001	2%	9%	2%
2000	1%	9%	2%
1999	2%	9%	2%
1998	2%	8%	2%
1997	1%	8%	2%
1996	2%	8%	2%
1995	3%	8%	2%
1994	3%	7%	2%
1993	2%	7%	2%

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White

65%

53%

View Data

White Student Percentage Comparison Over Years (1991-2023)
Year	Dedham High School	Massachusetts	Dedham School District
2023	67%	54%	67%
2022	68%	56%	68%
2021	71%	57%	69%
2020	70%	59%	70%
2019	70%	59%	70%
2018	70%	61%	72%
2017	70%	61%	72%
2016	70%	63%	73%
2015	71%	64%	74%
2014	73%	65%	75%
2013	74%	66%	77%
2012	77%	67%	78%
2011	76%	68%	77%
2010	78%	69%	79%
2009	78%	70%	81%
2008	81%	71%	83%
2007	82%	72%	84%
2006	84%	73%	85%
2005	87%	74%	87%
2004	88%	74%	89%
2003	89%	75%	90%
2002	89%	75%	89%
2001	90%	76%	91%
2000	91%	77%	92%
1999	91%	77%	92%
1998	91%	78%	92%
1997	93%	78%	92%
1996	95%	79%	94%
1995	93%	79%	94%
1994	93%	80%	93%
1993	95%	80%	94%
1992	97%	81%	95%
1991	97%	81%	96%

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Hawaiian

n/a

Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2009-2023)
Year	Dedham High School	Massachusetts	Dedham School District
2023	3%	5%	5%
2022	3%	4%	5%
2021	3%	4%	5%
2020	2%	4%	4%
2019	2%	4%	4%
2018	1%	3%	3%
2017	1%	3%	3%
2016	1%	3%	3%
2015	1%	3%	3%
2014	2%	3%	3%
2013	2%	3%	3%
2012	1%	3%	2%
2011	2%	2%	2%
2010	2%	2%	1%
2009	2%	2%	2%

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All Ethnic Groups

0.54

0.65

View Data

Diversity Score Comparison Over Years (1991-2023)
Year	Dedham High School	Massachusetts	Dedham School District
2023	0.52	0.64	0.51
2022	0.50	0.62	0.51
2021	0.47	0.62	0.49
2020	0.48	0.60	0.49
2019	0.48	0.60	0.49
2018	0.48	0.58	0.46
2017	0.48	0.58	0.46
2016	0.48	0.56	0.44
2015	0.47	0.55	0.43
2014	0.45	0.54	0.42
2013	0.43	0.53	0.40
2012	0.40	0.52	0.39
2011	0.41	0.51	0.39
2010	0.38	0.50	0.37
2009	0.38	0.51	0.34
2008	0.33	0.47	0.30
2007	0.32	0.46	0.28
2006	0.29	0.45	0.28
2005	0.24	0.43	0.24
2004	0.22	0.43	0.21
2003	0.21	0.42	0.19
2002	0.21	0.41	0.20
2001	0.19	0.40	0.18
2000	0.17	0.39	0.16
1999	0.17	0.39	0.15
1998	0.17	0.38	0.15
1997	0.14	0.38	0.14
1996	0.10	0.36	0.12
1995	0.13	0.36	0.13
1994	0.13	0.35	0.13
1993	0.09	0.35	0.11
1992	0.06	0.34	0.08
1991	0.05	0.33	0.07

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90-94%

90%

View Data

Graduation Rate Comparison Over Years (2013-2023)
Year	Dedham High School	Massachusetts	Dedham School District
2023	92%	90%	92%
2022	92%	90%	92%
2021	95%	87%	92%
2020	94%	88%	93%
2019	92%	88%	92%
2018	92%	87%	87%
2017	95%	87%	92%
2016	95%	87%	92%
2015	92%	87%	87%
2014	94%	86%	92%
2013	91%	85%	90%

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Participates in the

Yes

Eligible for

26%

35%

View Data

Free Lunch Eligibility Comparison Over Years (2000-2023)
Year	Dedham High School	Massachusetts	Dedham School District
2023	27%	35%	26%
2022	28%	35%	26%
2021	28%	36%	26%
2020	26%	35%	25%
2019	26%	35%	25%
2015	27%	36%	23%
2014	28%	34%	23%
2013	27%	32%	22%
2012	25%	30%	19%
2011	22%	29%	19%
2010	21%	27%	17%
2009	19%	25%	16%
2008	15%	24%	15%
2007	15%	23%	14%
2006	14%	23%	13%
2005	10%	23%	10%
2004	9%	22%	8%
2001	3%	19%	6%
2000	2%	20%	5%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2004-2023)
Year	Dedham High School	Massachusetts	Dedham School District
2023	5%	4%	4%
2022	5%	4%	4%
2021	5%	4%	4%
2020	5%	4%	4%
2019	5%	4%	4%
2015	5%	4%	3%
2014	7%	5%	5%
2013	6%	5%	5%
2012	7%	5%	4%
2011	6%	5%	4%
2010	7%	6%	4%
2009	6%	6%	4%
2008	5%	5%	4%
2007	4%	5%	3%
2006	4%	5%	3%
2005	3%	5%	3%
2004	3%	5%	2%

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School Statewide Testing

School District Name

Dedham School District

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

School Notes

School Mascot: The Marauders

Profile last updated: 02/09/2025

Frequently Asked Questions

What is Dedham High School's ranking?

Dedham High School is ranked #252 out of 1,626 schools, which ranks it among the top 20% of public schools in Massachusetts.

What schools are Dedham High School often compared to?

Dedham High Schoolis often viewed alongside schools like Canton High School by visitors of our site.

What percent of students have achieved state testing proficiency in math and reading?

65-69% of students have achieved math proficiency (compared to the 42% MA state average), while 60-64% of students have achieved reading proficiency (compared to the 44% MA state average).

What is the graduation rate of Dedham High School?

The graduation rate of Dedham High School is 90-94%, which is higher than the Massachusetts state average of 90%.

How many students attend Dedham High School?

731 students attend Dedham High School.

What is the racial composition of the student body?

65% of Dedham High School students are White, 17% of students are Hispanic, 11% of students are Black, 4% of students are Two or more races, and 3% of students are Asian.

What is the student-teacher ratio of Dedham High School?

Dedham High School has a student ration of 11:1, which is lower than the Massachusetts state average of 12:1.

What grades does Dedham High School offer ?

Dedham High School offers enrollment in grades 9-12 (Supplemental Virtual).

What school district is Dedham High School part of?

Dedham High School is part of Dedham School District.

School Reviews

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Quick Facts (2025-26)

Grades: 9-12
Enrollment: 731 students
Student-Teacher Ratio: 11:1
Minority Enrollment: 35%
: 90-94% (Top 50%)
: Top 20%
: 65-69% (Top 20%)
: 60-64% (Top 20%)
: 55-59% (Top 30%)
Source: National Center for Education Statistics (NCES), MA Dept. of Education