Skip to main content

Excellent

#153 of 1,793 schools in MA

Top 9% in state

Wm Diamond Middle

Middle School · Lexington

99 Hancock Street, Lexington, MA 02420

Enrollment

927

Student-Teacher

9.5:1

Score

8.7

Grades

6th – 8th

Data vintage2022-23

How this school compares

Massachusetts schools

#153 of 1,793

In Lexington

#8 of 11

public schools

In district

#8 of 10

Lexington

Equity

9.8 / 10

Excellent

School shortlistprofile + nearby

Shortlisting around Wm Diamond Middle?

Use this profile as one decision point, then compare nearby options, source confidence, and commute fit before picking a neighborhood around it.

Shortlist starter

Start with these real page-level signals, then use the full table and map below.

Wm Diamond Middle

8.7/10

Middle School in Lexington · grades 6th – 8th. Start here, then compare fit against nearby and district options.

Fiske

7.2/10

0.5 mi away. Use as a geographic alternative in the same move search.

New England Innovation Academy

6.1/10

0.7 mi away. Use as a geographic alternative in the same move search.

About Wm Diamond Middle

Wm Diamond Middle is a public middle school in Lexington, MA, part of Lexington. Wm Diamond Middle serves approximately 927 students, and covers grades 6th-8th, and has a 9.5:1 student-teacher ratio. Wm Diamond Middle has a current MySchoolScout rating of 8.7 out of 10 and ranks #153 of 1,793 schools in MA.

Structured state assessment records for Wm Diamond Middle show 84% math proficiency (multi-year average, 2009-2025) and 81% reading/ELA proficiency (multi-year average, 2009-2025).

How it compares0.3 pts below district
  • This school 8.7 · Excellent
  • District avg 9.0
  • MA avg 6.4

What Parents Should Know

At 9.5:1 students to teachers, Wm Diamond Middle sits well below the national average. Smaller classes like that usually mean more one-on-one time between students and teachers.

Score Breakdown

Full Profile · 3/3 metrics
Student Progress7.2Very Good40%
Year-over-year improvement in student test scores.
View breakdown
Years of Data17
Annual Change-1.19 pts/yr
Data Period2009–2025
TrendDeclining
Academics9.7Excellent35%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency79.2% (2025 MCAS)
Reading/ELA Proficiency75.2% (2025 MCAS)
Math vs. State Avg+37 pts
Reading vs. State Avg+32.4 pts
Overall Proficiency77% (2025 MCAS, Math+ELA)
Expected (poverty-adj.)56% (model expectation from 2025 MCAS)
vs. Expected+21.0 pts
Adjusted Percentile95th
Resources & Environment9.8Excellent25%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio9.5:1
Per-Pupil Spending$26,005
Chronic Absenteeism6.1%

Wm Diamond Middle — Students at Wm Diamond Middle score 77% proficient, which is above what's typical for similar communities (expected: 56%).

How we calculate scores →

Test Scores MA MCAS (2024-25)

Math Proficiency 83.6% (multi-year average, 2009-2025)
School
State
42.1% (multi-year state average, 2018-2025)
ELA Proficiency 81.1% (multi-year average, 2009-2025)
School
State
45.5% (multi-year state average, 2018-2025)

Based on 96 test records from MA state assessments. About our data

Proficiency Trend

→ Stable

Average proficiency (% at or above grade level) across Math & ELA over time.

2009
Math
85%
ELA
93%
2010
Math
84%
ELA
95%
2011
Math
89%
ELA
95%
2012
Math
90%
ELA
94%
2013
Math
88%
ELA
94%
2014
Math
88%
ELA
94%
2015
Math
89%
ELA
95%
2016
Math
88%
ELA
85%
2017
Math
86%
ELA
82%
2018
Math
86.8%
ELA
83%
2019
Math
88%
ELA
84.2%
2020*
Math
75%
ELA
76%
2021*
Math
75.2%
ELA
76.2%
2022
Math
83.2%
ELA
78.2%
2023
Math
83.8%
ELA
77.8%
2024
Math
82.5%
ELA
71.3%
2025
Math
79.3%
ELA
75.3%

* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.

Source: EdFacts (NCES) and state assessment data. Growth score: 7.2/10.

How Wm Diamond Middle Compares

See how Wm Diamond Middle performs across key quality dimensions compared to state benchmarks.

Overall Score
8.7/10
92th percentile in MA
Academic
9.7/10
Excellent
Growth
7.2/10
Very Good
Environment
9.8/10
Excellent

Funding & Resources

Teaching Staff
10:1 student-teacher ratio
98 teachers
Chronic Absenteeism
Students missing 15+ days per year (SY 2022-23)
6.1%

Location

99 Hancock Street, Lexington, MA 02420

Nearby Alternatives

Families considering Wm Diamond Middle may also want to explore other middle schools in the area. Joseph Estabrook (rated 9.6/10, 1.1 miles away), which scores slightly higher. Another option is Bowman (rated 9.5/10, 2.8 miles away), which scores slightly higher. Additionally, Lexington High (rated 9.3/10, 1.4 miles away), which scores slightly higher. For more schools in Lexington, see our Lexington schools guide .

Nearby Schools

20 within 3.2 mi
School Distance Rating
Fiske Lexington 0.5 mi 7.2
NEW ENGLAND INNOVATION ACADEMY Lexington 0.7 mi 6.1
Joseph Estabrook Lexington 1.1 mi 9.6
FUSION ACADEMY BURLINGTON Burlington 1.1 mi
Lexington High Lexington 1.4 mi 9.3
MEADOWRIDGE PELHAM ACADEMY Lexington 1.8 mi
Lexington Children's Place Lexington 1.9 mi 6.8
Bridge Lexington 1.9 mi 9.2
Maria Hastings Lexington 1.8 mi 8.8
FUSE SCHOOL Lexington 1.7 mi
Jonas Clarke Middle Lexington 2.3 mi 9.3
Harrington Lexington 2.0 mi 8.8
PRIMROSE SCHOOL OF BURLINGTON Burlington 2.5 mi
Francis Wyman Elementary Burlington 2.6 mi 7.6
Bowman Lexington 2.8 mi 9.5
BEDFORD MONTESSORI SCHOOL Bedford 2.4 mi
Burlington High Burlington 2.7 mi 8.0
COTTING SCHOOL Lexington 3.0 mi 7.1
LEXINGTON CHRISTIAN ACADEMY Lexington 2.6 mi 6.9
LEXINGTON MONTESSORI SCHOOL Lexington 3.2 mi 7.8

Neighborhood Census ACS (2019-2023)

Census data for ZIP 02420 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$233,068

Median Home Value

$1,148,100

Median Rent

$2,771/mo

Population

16,287

College Educated

85.3%

Homeownership

86.8%

Avg Commute

30.2 min

Poverty Rate

2.4%

Median Age

45.1

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
John F Kennedy Middle Waltham, MA 8.7
Marshall Simonds Middle Burlington, MA 8.7
Pollard Middle Needham, MA 8.7
Galvin Middle School Wakefield, MA 8.6
Hingham Middle School Hingham, MA 8.6
Oak Hill Middle Newton Centre, MA 8.6

Frequently Asked Questions

Common questions about Wm Diamond Middle

What grades does Wm Diamond Middle serve?

Wm Diamond Middle serves students in grades 6th through 8th.

How many students attend Wm Diamond Middle?

Wm Diamond Middle has an enrollment of approximately 927 students.

What is the student-teacher ratio at Wm Diamond Middle?

The student-teacher ratio at Wm Diamond Middle is 9.5:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Wm Diamond Middle rank in MA?

Wm Diamond Middle ranks #153 of 1,793 schools in MA.

What is Wm Diamond Middle's MySchoolScout rating?

Wm Diamond Middle has a current MySchoolScout rating of 8.7 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.

What are the test scores at Wm Diamond Middle?

Based on loaded state assessment records, Wm Diamond Middle has 84% math proficiency (multi-year average, 2009-2025) and 81% reading/ELA proficiency (multi-year average, 2009-2025).

Is Wm Diamond Middle a charter school?

No, Wm Diamond Middle is not a charter school. It is a traditional public school operated by the local school district.

Is Wm Diamond Middle a Title I school?

No, Wm Diamond Middle is not currently a Title I school.

11 schools nearby View map →

Neighborhood Context

Walk Score
18 Car-Dependent
Transit Score
28 Some Transit
Bike Score
45 Somewhat Bikeable

Powered by Walk Score

Quick Facts NCES CCD (SY 2022-23)

Grades
6th – 8th
Enrollment
927
Student-Teacher Ratio
9.5:1
Teachers (FTE)
98
Type
regular
Setting
Large Suburb
County
Middlesex County
Chronic Absenteeism (SY 2022-23)
6.1%

District

Lexington
District Enrollment
6,805
Schools in District
10
Per-Pupil Spending
$26,005
District Rank
#8 of 10

How we rate schools

A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.

See how we rate

Related reading

Get school insights in your inbox

New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.

We respect your privacy. Unsubscribe at any time.