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Wm Diamond Middle School

99 Hancock Street
Lexington, MA 02420

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Top 5%

Tel: (781) 861-2460

www.lexingtonma.org

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Serving 936 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 65% of the student body (majority Asian), which is higher than the Massachusetts state average of 49% (majority Hispanic and Black).

Quick Facts (26-27)

Grades: 6-8
Enrollment: 936 students
Student-Teacher Ratio: 9:1
Minority Enrollment: 65%
: Top 5% in MA
: 84% (Top 5%)
: 78% (Top 5%)
: 86% (Top 1%)
: Wm Diamond Middle serves the northwest part of Lexington, MA, covering an area of approximately 8.3 square miles. Most families are within a 5-10 minute drive to the school, with the furthest edge of the attendance zone located about 3.2 miles away.
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 936 students has stayed relatively flat over five school years.

The teacher population of 99 teachers has grown by 11% over five school years.

Grades Offered

Grades 6-8
(Supplemental Virtual)

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Distribution of Students By Grade Trends
Grade	Wm Diamond Middle School
6	322
7	297
8	317

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Total Students

936 students

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Showing 2016–2025. Full 35-year historical data available below ↓

Total Students Trends (1991-2025)
Year	Wm Diamond Middle School
2025	936
2024	927
2023	942
2022	919
2021	912
2020	902
2019	919
2018	887
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
1992	453
1991	472

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Total Classroom Teachers

99 teachers

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Showing 2016–2025. Full 22-year historical data available below ↓

Total Classroom Teachers Trends (2004-2025)
Year	Wm Diamond Middle School
2025	99
2024	98
2023	93
2022	93
2021	89
2020	84
2019	89
2018	79
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
2004	69

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School Calendar

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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 0.67, which is more than the diversity score at state average of 0.66. The school's diversity has stayed relatively flat over five school years.

This School

State Level (MA)

#31 out of 1626 schools
(Top 5%)

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Showing 2013–2023. Full 14-year historical data available below ↓

Overall School Rank Trends (2010-2023)
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
2011	#100
2010	#79

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84%

42%

View Data

Showing 2013–2023. Full 14-year historical data available below ↓

Math Proficiency Comparison (2010-2023)
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%
2011	84%	59%	87%
2010	85%	59%	86%

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78%

44%

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Showing 2012–2022. Full 13-year historical data available below ↓

Reading and Language Arts Proficiency Comparison (2010-2022)
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%
2010	93%	69%	89%

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86%

44%

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Science Proficiency Comparison (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

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Showing 2016–2025. Full 22-year historical data available below ↓

Student-Teacher Ratio Comparison (2004-2025)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2025	9:1	12:1
2024	9:1	12:1
2023	10:1	12:1	11:1
2022	10:1	12:1	11:1
2021	10:1	12:1	11:1
2020	11:1	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
2004	11:1	14:1	13:1

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Asian

44%

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Showing 2016–2025. Full 35-year historical data available below ↓

Asian Student Percentage Comparison (1991-2025)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2025	44%	8%
2024	44%	7%
2023	44%	7%	45%
2022	43%	7%	43%
2021	43%	7%	42%
2020	42%	7%	39%
2019	40%	7%	39%
2018	37%	7%	38%
2017	35%	7%	38%
2016	34%	6%	36%
2015	33%	6%	34%
2014	31%	6%	32%
2013	30%	6%	31%
2012	28%	6%	30%
2011	28%	6%	28%
2010	26%	6%	27%
2009	26%	5%	25%
2008	21%	5%	24%
2007	20%	5%	22%
2006	18%	5%	21%
2005	16%	5%	20%
2004	13%	5%	18%
2003	13%	5%	17%
2002	11%	4%	16%
2001	13%	4%	14%
2000	14%	4%	13%
1999	14%	4%	14%
1998	13%	4%	14%
1997	12%	4%	13%
1996	11%	4%	13%
1995	9%	4%	12%
1994	10%	4%	12%
1993	12%	4%	12%
1992	12%	4%	12%
1991	10%	3%	7%

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Hispanic

26%

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Showing 2016–2025. Full 35-year historical data available below ↓

Hispanic Student Percentage Comparison (1991-2025)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2025	8%	26%
2024	6%	25%
2023	5%	24%	5%
2022	4%	23%	5%
2021	4%	22%	5%
2020	4%	22%	4%
2019	4%	21%	4%
2018	3%	20%	3%
2017	3%	19%	3%
2016	3%	19%	3%
2015	2%	18%	3%
2014	3%	17%	3%
2013	3%	16%	4%
2012	3%	16%	4%
2011	4%	16%	4%
2010	5%	15%	3%
2009	6%	15%	4%
2008	4%	14%	5%
2007	3%	14%	4%
2006	4%	13%	5%
2005	2%	12%	2%
2004	2%	11%	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%	8%	1%
1992	1%	8%	1%
1991	1%	8%	6%

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Black

10%

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Showing 2016–2025. Full 35-year historical data available below ↓

Black Student Percentage Comparison (1991-2025)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2025	4%	10%
2024	3%	10%
2023	4%	10%	4%
2022	4%	10%	4%
2021	4%	10%	4%
2020	4%	9%	4%
2019	3%	9%	4%
2018	4%	9%	4%
2017	3%	9%	4%
2016	4%	9%	4%
2015	3%	9%	4%
2014	3%	9%	4%
2013	3%	9%	4%
2012	5%	8%	4%
2011	5%	8%	4%
2010	5%	8%	5%
2009	4%	8%	4%
2008	5%	9%	5%
2007	5%	8%	5%
2006	5%	8%	5%
2005	5%	9%	5%
2004	5%	9%	5%
2003	4%	9%	5%
2002	6%	9%	5%
2001	6%	9%	5%
2000	7%	9%	6%
1999	8%	9%	6%
1998	9%	8%	6%
1997	7%	8%	7%
1996	7%	8%	7%
1995	8%	8%	7%
1994	9%	8%	7%
1993	8%	8%	7%
1992	9%	8%	7%
1991	8%	8%	5%

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White

35%

51%

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Showing 2016–2025. Full 35-year historical data available below ↓

White Student Percentage Comparison (1991-2025)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2025	35%	51%
2024	38%	53%
2023	39%	54%	38%
2022	41%	56%	40%
2021	41%	57%	42%
2020	41%	58%	46%
2019	44%	59%	46%
2018	49%	60%	50%
2017	53%	61%	50%
2016	53%	63%	52%
2015	56%	64%	54%
2014	58%	65%	56%
2013	60%	66%	57%
2012	61%	67%	58%
2011	60%	68%	61%
2010	62%	69%	62%
2009	63%	70%	64%
2008	70%	71%	66%
2007	72%	72%	69%
2006	73%	73%	69%
2005	77%	74%	73%
2004	80%	75%	75%
2003	81%	75%	76%
2002	81%	76%	77%
2001	79%	76%	79%
2000	78%	77%	79%
1999	77%	77%	79%
1998	77%	78%	79%
1997	80%	78%	79%
1996	81%	79%	79%
1995	82%	79%	80%
1994	80%	79%	80%
1993	79%	80%	80%
1992	78%	80%	80%
1991	81%	81%	79%

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Two or more races

View Data

Showing 2016–2025. Full 17-year historical data available below ↓

Two or More Races Student Percentage Comparison (2009-2025)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2025	9%	5%
2024	9%	5%
2023	8%	5%	8%
2022	8%	4%	8%
2021	8%	4%	7%
2020	9%	4%	7%
2019	9%	4%	7%
2018	7%	4%	5%
2017	6%	4%	5%
2016	6%	3%	5%
2015	6%	3%	5%
2014	5%	3%	5%
2013	4%	3%	4%
2012	3%	3%	4%
2011	3%	2%	3%
2010	2%	2%	3%
2009	1%	2%	3%

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All Ethnic Groups

65%

49%

0.67

0.66

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Showing 2016–2025. Full 35-year historical data available below ↓

Diversity Score Comparison (1991-2025)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2025	0.67	0.66
2024	0.66	0.65
2023	0.65	0.64	0.65
2022	0.64	0.62	0.65
2021	0.64	0.62	0.65
2020	0.65	0.61	0.63
2019	0.64	0.60	0.63
2018	0.62	0.59	0.61
2017	0.60	0.58	0.61
2016	0.60	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	0.54	0.48	0.53
2008	0.47	0.47	0.50
2007	0.44	0.46	0.48
2006	0.43	0.45	0.47
2005	0.38	0.43	0.42
2004	0.34	0.42	0.41
2003	0.33	0.42	0.39
2002	0.33	0.40	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	0.33	0.36	0.35
1995	0.32	0.36	0.35
1994	0.35	0.36	0.35
1993	0.36	0.35	0.34
1992	0.37	0.35	0.34
1991	0.33	0.33	0.36

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(22-23)

6.1%

22.8%

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Chronic Absenteeism Rate (2021-2023)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2023	6.1%	22.8%	7.8%
2022	8.6%	28.6%	7.8%
2021	11.8%	18.2%	4.1%

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Participates in the

Yes

Eligible for

34%

View Data

Showing 2011–2025. Full 26-year historical data available below ↓

Free Lunch Eligibility Comparison (2000-2025)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2025	4%	34%
2024	4%	35%
2023	4%	35%	5%
2021	4%	36%	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

Showing 2011–2025. Full 26-year historical data available below ↓

Reduced-Price Lunch Eligibility Comparison (2000-2025)
Year	Wm Diamond Middle School	Massachusetts	Lexington School District
2025	1%	4%
2024	1%	4%
2023	1%	4%	1%
2021	1%	4%	1%
2019	1%	4%	1%
2015	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%
2000	2%	5%	1%

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School Statewide Testing

View Education Department Test Scores

School District Name

Lexington School District

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

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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?

936 students attend Wm Diamond Middle School.

What is the racial composition of the student body?

44% of Wm Diamond Middle School students are Asian, 35% of students are White, 9% of students are Two or more races, 8% of students are Hispanic, and 4% 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.

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Quick Facts (26-27)

Grades: 6-8
Enrollment: 936 students
Student-Teacher Ratio: 9:1
Minority Enrollment: 65%
: Top 5%
: 84% (Top 5%)
: 78% (Top 5%)
: 86% (Top 1%)
: Wm Diamond Middle serves the northwest part of Lexington, MA, covering an area of approximately 8.3 square miles. Most families are within a 5-10 minute drive to the school, with the furthest edge of the attendance zone located about 3.2 miles away.
Source: National Center for Education Statistics (NCES), MA Dept. of Education

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