Wm Diamond Middle School (Ranked Top 5% for 2025-26)

99 Hancock Street
Lexington, MA 02420

( shown in map)

10/

Top 5%

Serving 927 students in grades 6-8, Wm Diamond Middle School ranks in the top 5% of all schools in Massachusetts for overall test scores (math proficiency is top 5%, and reading proficiency is top 5%).

The percentage of students achieving is 84% (which is higher than the Massachusetts state average of 42%). The percentage of students achieving is 78% (which is higher than the Massachusetts state average of 44%).

The student-teacher ratio of 9:1 is lower than the Massachusetts state level of 12:1.

Minority enrollment is 62% of the student body (majority Asian), which is higher than the Massachusetts state average of 47% (majority Hispanic and Black).

Quick Facts (2025-26)

Grades: 6-8
Enrollment: 927 students
Student-Teacher Ratio: 9:1
Minority Enrollment: 62%
: Top 5% in MA
: 84% (Top 5%)
: 78% (Top 5%)
: 86% (Top 1%)
Source: National Center for Education Statistics (NCES), MA Dept. of Education

Top Rankings

Wm Diamond Middle School ranks among the top 20% of public schools in Massachusetts for:

School Overview

Wm Diamond Middle School's student population of 927 students has stayed relatively flat over five school years.

The teacher population of 98 teachers has grown by 10% over five school years.

Grades Offered

Grades 6-8
(Supplemental Virtual)

View Data

Distribution of Students By Grade Trends
Grade	Wm Diamond Middle School
6	297
7	308
8	322

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Total Students

927 students

View Data

Total Students Trends Over Years (1993-2023)
Year	Wm Diamond Middle School
2023	942
2022	919
2021	912
2020	919
2019	919
2018	852
2017	852
2016	778
2015	792
2014	791
2013	781
2012	783
2011	742
2010	733
2009	732
2008	772
2007	818
2006	804
2005	790
2004	770
2003	774
2002	735
2001	694
2000	689
1999	721
1998	679
1997	595
1996	527
1995	522
1994	497
1993	488

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Gender %

Total Classroom Teachers

98 teachers

View Data

Total Classroom Teachers Trends Over Years (2005-2023)
Year	Wm Diamond Middle School
2023	93
2022	93
2021	89
2020	89
2019	89
2018	76
2017	76
2016	74
2015	73
2014	73
2013	70
2012	71
2011	69
2010	72
2009	71
2008	74
2007	73
2006	74
2005	61

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School Calendar

School Rankings

Wm Diamond Middle School ranks within the top 5% of all 1,626 schools in Massachusetts (based off of combined math and reading proficiency testing data).

The of Wm Diamond Middle School is 0.66, which is more 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)

#31 out of 1626 schools
(Top 5%)

View Data

Overall School Rank Trends Over Years (2012-2023)
Year	Wm Diamond Middle School
2023	#31
2022	#26
2021	#100
2019	#25
2018	#171
2017	#158
2016	#100
2015	#105
2014	#110
2013	#110
2012	#84

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84%

42%

View Data

Math Proficiency Comparison Over Years (2012-2023)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2023	84%	42%	82%
2022	83%	41%	79%
2021	75%	37%	74%
2019	88%	51%	83%
2018	86%	52%	84%
2017	88%	53%	83%
2016	89%	64%	88%
2015	88%	61%	88%
2014	88%	61%	88%
2013	90%	61%	88%
2012	89%	59%	88%

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78%

44%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2011-2022)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2022	78%	44%	77%
2021	76%	49%	78%
2019	85%	54%	80%
2018	82%	56%	84%
2017	85%	54%	82%
2016	95%	71%	89%
2015	94%	69%	91%
2014	94%	69%	91%
2013	94%	69%	91%
2012	95%	69%	91%
2011	95%	70%	91%

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86%

44%

View Data

Science Proficiency Comparison Over Years (2021-2022)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2022	86%	44%	81%
2021	83%	42%	73%

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Student-Teacher Ratio

9:1

12:1

View Data

Student-Teacher Ratio Comparison Over Years (2005-2023)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2023	10:1	12:1	11:1
2022	10:1	12:1	11:1
2021	10:1	12:1	11:1
2020	10:1	13:1	12:1
2019	10:1	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	11:1	14:1	12:1
2013	11:1	14:1	12:1
2012	11:1	14:1	12:1
2011	11:1	14:1	12:1
2010	10:1	14:1	12:1
2009	10:1	14:1	12:1
2008	10:1	14:1	12:1
2007	11:1	13:1	12:1
2006	11:1	13:1	12:1
2005	13:1	14:1	12:1

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American Indian

n/a

Asian

44%

View Data

Asian Student Percentage Comparison Over Years (1993-2023)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2023	44%	7%	45%
2022	43%	7%	43%
2021	43%	7%	42%
2020	40%	7%	39%
2019	40%	7%	39%
2018	35%	8%	38%
2017	35%	8%	38%
2016	35%	6%	36%
2015	33%	6%	34%
2014	30%	6%	32%
2013	30%	6%	31%
2012	29%	6%	30%
2011	28%	7%	28%
2010	26%	6%	27%
2009	26%	6%	25%
2008	22%	6%	24%
2007	20%	6%	22%
2006	19%	6%	21%
2005	16%	5%	20%
2004	13%	5%	18%
2003	13%	5%	17%
2002	12%	5%	16%
2001	13%	4%	14%
2000	14%	4%	13%
1999	14%	4%	14%
1998	14%	4%	14%
1997	12%	4%	13%
1996	12%	4%	13%
1995	9%	4%	12%
1994	10%	4%	12%
1993	12%	4%	12%

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Hispanic

25%

View Data

Hispanic Student Percentage Comparison Over Years (1993-2023)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2023	5%	24%	5%
2022	4%	23%	5%
2021	4%	22%	5%
2020	4%	21%	4%
2019	4%	21%	4%
2018	2%	19%	3%
2017	2%	19%	3%
2016	2%	19%	3%
2015	2%	18%	3%
2014	3%	17%	3%
2013	3%	16%	4%
2012	3%	16%	4%
2011	4%	15%	4%
2010	5%	15%	3%
2009	6%	14%	4%
2008	3%	15%	5%
2007	4%	14%	4%
2006	4%	13%	5%
2005	2%	12%	2%
2004	2%	12%	2%
2003	2%	11%	2%
2002	2%	11%	2%
2001	2%	11%	2%
2000	1%	10%	2%
1999	1%	10%	1%
1998	1%	10%	1%
1997	1%	10%	1%
1996	1%	9%	1%
1995	1%	9%	1%
1994	1%	9%	1%
1993	1%	9%	1%

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Black

10%

View Data

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

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White

38%

53%

View Data

White Student Percentage Comparison Over Years (1993-2023)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2023	39%	54%	38%
2022	41%	56%	40%
2021	41%	57%	42%
2020	44%	59%	46%
2019	44%	59%	46%
2018	54%	61%	50%
2017	54%	61%	50%
2016	54%	63%	52%
2015	56%	64%	54%
2014	58%	65%	56%
2013	60%	66%	57%
2012	61%	67%	58%
2011	61%	68%	61%
2010	62%	69%	62%
2009	63%	70%	64%
2008	70%	71%	66%
2007	71%	72%	69%
2006	72%	73%	69%
2005	77%	74%	73%
2004	80%	74%	75%
2003	80%	75%	76%
2002	81%	75%	77%
2001	79%	76%	79%
2000	78%	77%	79%
1999	77%	77%	79%
1998	77%	78%	79%
1997	80%	78%	79%
1996	80%	79%	79%
1995	82%	79%	80%
1994	80%	80%	80%
1993	79%	80%	80%

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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	Wm Diamond Middle School	Massachusetts	Lexington School District
2023	8%	5%	8%
2022	8%	4%	8%
2021	8%	4%	7%
2020	9%	4%	7%
2019	9%	4%	7%
2018	6%	3%	5%
2017	6%	3%	5%
2016	6%	3%	5%
2015	6%	3%	5%
2014	6%	3%	5%
2013	4%	3%	4%
2012	3%	3%	4%
2011	2%	2%	3%
2010	2%	2%	3%
2009	1%	2%	3%

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All Ethnic Groups

0.66

0.65

View Data

Diversity Score Comparison Over Years (1993-2023)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2023	0.65	0.64	0.65
2022	0.64	0.62	0.65
2021	0.64	0.62	0.65
2020	0.64	0.60	0.63
2019	0.64	0.60	0.63
2018	0.59	0.58	0.61
2017	0.59	0.58	0.61
2016	0.59	0.56	0.60
2015	0.58	0.55	0.60
2014	0.57	0.54	0.59
2013	0.55	0.53	0.58
2012	0.55	0.52	0.57
2011	0.56	0.51	0.55
2010	0.55	0.50	0.55
2009	0.55	0.51	0.53
2008	0.47	0.47	0.50
2007	0.46	0.46	0.48
2006	0.45	0.45	0.47
2005	0.38	0.43	0.42
2004	0.34	0.43	0.41
2003	0.34	0.42	0.39
2002	0.33	0.41	0.38
2001	0.36	0.40	0.36
2000	0.37	0.39	0.36
1999	0.38	0.39	0.35
1998	0.39	0.38	0.35
1997	0.34	0.38	0.35
1996	0.35	0.36	0.35
1995	0.31	0.36	0.35
1994	0.35	0.35	0.35
1993	0.36	0.35	0.34

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Participates in the

Yes

Eligible for

35%

View Data

Free Lunch Eligibility Comparison Over Years (2000-2023)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2023	4%	35%	5%
2022	4%	35%	5%
2021	4%	36%	5%
2020	4%	35%	5%
2019	4%	35%	5%
2015	4%	36%	5%
2014	5%	34%	5%
2013	5%	32%	5%
2012	5%	30%	5%
2011	5%	29%	5%
2010	4%	27%	4%
2009	4%	25%	3%
2008	3%	24%	3%
2007	3%	23%	2%
2006	3%	23%	3%
2005	2%	23%	2%
2004	2%	22%	3%
2001	2%	19%	2%
2000	2%	20%	3%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2001-2023)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2023	1%	4%	1%
2022	1%	4%	1%
2021	1%	4%	1%
2020	1%	4%	1%
2019	1%	4%	1%
2014	1%	5%	1%
2013	1%	5%	2%
2012	1%	5%	2%
2011	1%	5%	1%
2010	2%	6%	1%
2009	2%	6%	2%
2008	1%	5%	1%
2007	2%	5%	1%
2006	2%	5%	1%
2005	1%	5%	1%
2004	2%	5%	1%
2001	1%	5%	1%

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School Statewide Testing

School District Name

Lexington School District

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

Profile last updated: 02/09/2025

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Frequently Asked Questions

What is Wm Diamond Middle School's ranking?

Wm Diamond Middle School is ranked #31 out of 1,626 schools, which ranks it among the top 5% of public schools in Massachusetts.

What schools are Wm Diamond Middle School often compared to?

Wm Diamond Middle Schoolis often viewed alongside schools like Jonas Clarke Middle School by visitors of our site.

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

84% of students have achieved math proficiency (compared to the 42% MA state average), while 78% of students have achieved reading proficiency (compared to the 44% MA state average).

How many students attend Wm Diamond Middle School?

927 students attend Wm Diamond Middle School.

What is the racial composition of the student body?

44% of Wm Diamond Middle School students are Asian, 38% of students are White, 9% of students are Two or more races, 6% of students are Hispanic, and 3% of students are Black.

What is the student-teacher ratio of Wm Diamond Middle School?

Wm Diamond Middle School has a student ration of 9:1, which is lower than the Massachusetts state average of 12:1.

What grades does Wm Diamond Middle School offer ?

Wm Diamond Middle School offers enrollment in grades 6-8 (Supplemental Virtual).

What school district is Wm Diamond Middle School part of?

Wm Diamond Middle School is part of Lexington School District.