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If you could change one rule at Wm Diamond Middle, what would it be?
Community prompt from u/allk12. Replies below.
Enrollment
936
Middle
DISTRICT 866 · STATE 547
SCHOOL COMMUNITY·LEXINGTON·NCES 250684002552
Wm Diamond Middle
99 Hancock Street, Lexington, MA 02420 · (781) 861-2460 · Middlesex County
GRADES 06–08MIDDLE21-SUBURBREGULAR SCHOOL936 STUDENTS
A-
allk12 Grade
Scored higher than 84% of Massachusetts public middle schools
- A+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- ·Beats expectations Not available for this school, so the grade uses the other parts.
- DThree-year trend Change in reading and math proficiency over the last three test years.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Massachusetts public middle schools
Student : Teacher
9.4:1
99 FTE teachers
DISTRICT 9.4:1 · STATE 11.5:1
Free / Reduced Lunch
,
Title I proxy
Community
5
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 6 | 322 | 34% |
| Grade 7 | 297 | 32% |
| Grade 8 | 317 | 34% |
Student demographics
66%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 65% · STATE 65% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
School pathway
Students here typically continue to
Wm Diamond Middle→Lexington High
Based on grade levels within Lexington. Attendance zones can vary; confirm enrollment with the district.
Test scores
MCAS 2024-25 . % Meeting or Exceeding ExpectationsEnglish Language Arts
75.0%
MA avg 43.8% . -10.0pp since 2016
Math
79.0%
MA avg 42.2% . -9.0pp since 2016
What this means: On the MCAS, Massachusetts's statewide test, about 75 of every 100 students at this school read and write at grade level and about 79 of 100 do math at grade level. Across all Massachusetts schools, those numbers are about 44 and 42. Reading and writing scores are down about 10 points since 2016, while math scores are down about 9 points.
MCAS results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 75.0% | 79.0% |
| 2023-24 | 71.0% | 83.0% |
| 2022-23 | 78.0% | 84.0% |
| 2021-22 | 78.0% | 83.0% |
| 2020-21 | 76.0% | 75.0% |
| 2018-19 | 84.0% | 88.0% |
| 2017-18 | 82.0% | 87.0% |
| 2016-17 | 85.0% | 88.0% |
% Meeting or Exceeding Expectations, all students and all tested grades.
Source: MCAS. All students, all grades. See all years and grades →
Where Wm Diamond Middle ranks
Among middle schools| Measure | This school | In Massachusetts | In Middlesex County |
|---|---|---|---|
| Math proficiency ranked highest first | 79.0% | #5 of 304 ▼ 4 | #5 of 70 ▼ 4 |
| Reading proficiency ranked highest first | 75.0% | #14 of 304 ▲ 1 | #9 of 70 ▼ 1 |
| 3-year test score change ranked biggest drop first | -3.5pp | #50 of 299 | #9 of 69 |
| Enrollment ranked largest first | 936 | #21 of 310 | #7 of 72 |
| Students per teacher ranked fewest first | 9.4:1 | #32 of 296 | #11 of 70 |
| Diversity index ranked most diverse first | 66.3% | #30 of 296 | #13 of 70 |
| Enrollment change since 2017-18 ranked fastest growth first | +5.5% | #46 of 82 | #18 of 27 |
Ranked against other public middle schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
936
+24 (+3%) vs 2020
+98% since 1990-91, when it was 472
Student : Teacher
9.4:1
was 10.4:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 936 | 99.2 | 9.4:1 | N/A |
| 2023-24 | 927 | 98.5 | 9.4:1 | N/A |
| 2022-23 | 942 | 93.3 | 10.1:1 | N/A |
| 2020-21 | 912 | 88 | 10.4:1 | N/A |
| 2017-18 | 887 | 79.3 | 11.2:1 | N/A |
| 2015-16 | 778 | 73 | 10.7:1 | N/A |
| 2010-11 | 742 | 69 | 10.8:1 | 7% (50) |
| 2000-01 | 694 | N/A | N/A | 4% (27) |
| 1990-91 | 472 | N/A | N/A | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Wm Diamond Middle.
Since 2017-18: students up 6% (887 to 936); teachers up 25% (79.3 to 99.2).
About Wm Diamond Middle
Wm Diamond Middle operates as a large middle school in Lexington, Massachusetts. Students in grades 6 through 8 make up the school's enrollment of 936 students. Middle schools in Massachusetts average about 547 students, which makes this school 71% larger than average.
Lexington is made up of 10 schools with 6,748 students in all.
The largest racial or ethnic group at Wm Diamond Middle is Asian, with 45% of students. Other groups include 35% White, 9% multiracial, 8% Hispanic, and 4% Black. The county population is about 14% Asian. The diversity index for Wm Diamond Middle is 66%. For US public schools as a whole it is 70%.
Teacher count: 99.2 full-time equivalents. Student-to-teacher ratio: 9.4:1. The average for middle schools in Massachusetts, 11.5:1, is higher.
Wm Diamond Middle earns an A- on the allk12 Grade, which blends test scores, results against poverty-based expectations, and the three-year trend. It scored higher than 84% of Massachusetts public middle schools.
In Middlesex County, the median household earns about $130,847 a year, about 60% of adults have at least a bachelor's degree, and roughly 5% of residents are in poverty. Middlesex County has 386 public schools with about 215,896 students, including Wm Diamond Middle.
The closest school to Wm Diamond Middle is Fiske, located about 0.5 miles away. There are at least 8 more public schools inside five miles.
The school's locale code, Suburb: Large, means it is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
The school grew from 912 students in 2020-21 to 936 in 2024-25.
The discussion board for Wm Diamond Middle is open to topics like pickup and drop-off, after-school programs, and teacher feedback. Teachers and staff are welcome to share updates too.
Middlesex County at a glance
View full county profilePopulation
1,638,365
Census ACS
Median income
$130,847
Household, ACS
Bachelor's+
60%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
386
215,896 students
Quick facts
Related schools
Other schools in Lexington
- Lexington HighHigh · 2,405 students
- Jonas Clarke MiddleMiddle · 796 students
- Maria HastingsElementary · 579 students
- Joseph EstabrookElementary · 490 students
- BowmanElementary · 429 students
- HarringtonElementary · 374 students
Other schools in Lexington
- Lexington HighHigh · 2,405 students
- Jonas Clarke MiddleMiddle · 796 students
- Minuteman Regional HighHigh · 669 students
- Maria HastingsElementary · 579 students
- Joseph EstabrookElementary · 490 students
- BowmanElementary · 429 students
Nearby schools
- Fiske0.5 mi · 324
- Joseph Estabrook1.1 mi · 490
- Lexington High1.4 mi · 2,405
- Maria Hastings1.8 mi · 579
- Lexington Children's Place1.9 mi · 70
- Bridge1.9 mi · 345
Frequently asked questions
About Wm Diamond MiddleWhat is the total enrollment at Wm Diamond Middle?
Wm Diamond Middle enrolls approximately 936 students in grades 06-08.
What grades does Wm Diamond Middle serve?
Wm Diamond Middle serves grades 06-08.
How many teachers does Wm Diamond Middle have?
Wm Diamond Middle employs 99 FTE teachers, for a student-to-teacher ratio of 9.4:1.
What is the student diversity at Wm Diamond Middle?
Student demographics at Wm Diamond Middle are roughly 35% White, 8% Hispanic, 4% Black, 45% Asian, 9% Two or more.
Who oversees Wm Diamond Middle?
Wm Diamond Middle is overseen by Lexington in Middlesex County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.