Enrollment
796
Massachusetts · 2024-25 NCES data
Middle school (grades 6-8) · Lexington, MA
Jonas Clarke Middle
Federal NCES profile for Jonas Clarke Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 56/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 250684002551
👥 S:T ratio 64
🌟 Gifted program 30
🎓 Counselors 47
📋 Attendance 85
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Jonas Clarke Middle earns 56/100 on the Resource Investment Index, with class sizes smaller than 88% of Massachusetts schools.
- #1 of 11
- public schools in Lexington · Resource Index
- 56
- Resource Index · Higher
- 9.1:1
- small classes for Massachusetts
- 796
- students enrolled
Jonas Clarke Middle has class sizes smaller than 88% of Massachusetts schools. Computed live against every Massachusetts school reporting to NCES.
By Resource Investment Index, Jonas Clarke Middle ranks #1 of 11 public schools in Lexington, MA.
School address
District: Lexington · Massachusetts
NCES ID 250684002551 Verify on NCES CCD record →
Teachers (FTE)
87.0
Federal CCD staff survey
Students per teacher
9.1:1
vs 12.3:1 Massachusetts avg
-26% vs state
Student-teacher ratio in context
How Jonas Clarke Middle compares with Massachusetts and U.S. medians
What stands out at Jonas Clarke Middle
Jonas Clarke Middle is a large middle school in Lexington, Massachusetts, enrolling 796 students.
Classes run notably small here: at 9.1:1, Jonas Clarke Middle is leaner than roughly 88% of Massachusetts schools and 26% under the state's 12.3:1 norm, more adult attention per pupil than most peers.
Enrollment of 796 puts it in the larger third of Massachusetts schools by headcount.
Its Resource Investment Index outscores 92% of the 1,831 Massachusetts schools with a score on record, a top-tier result on this measure.
Its student body is led by Asian (43%) and White (40%) (diversity index 65/100).
Counselor coverage runs a bit thin, about 265 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Attendance holds up well here: only 5.9% of students were chronically absent, below the typical post-pandemic national figure.
Among Lexington's middle schools, it stands alongside Wm Diamond Middle (936 students): Jonas Clarke Middle is smaller than that campus by headcount and runs leaner classes (9.1:1 vs 10.1:1).
Lexington also operates Lexington High (2,405 students) and Wm Diamond Middle (936 students) alongside Jonas Clarke Middle.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Jonas Clarke Middle compares
Jonas Clarke Middle on the metrics families compare, against Massachusetts and U.S. means.
| Metric | This school | vs Massachusetts | Massachusetts avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 9.1:1 | ▼ 26% | 12.3:1 | 15.7:1 |
| Enrollment | 796 | top 13% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
9.1:1
Leaner classes than 92% of US schools, among the more generously staffed nationally.
796
Bigger than 85% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
9.1:1
students per teacher
- 26% below state mean
Top 12% in Massachusetts - lower ratio than 88% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
5.9%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$24,326
per pupil, district-wide
- above Massachusetts avg of $22,458
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors3.0 FTE
Per 265 students, the combined health-and-guidance staffing load for this school.
Discipline context
4
in-school suspensions + 3 out-of-school
Suspension rate: 0.5 per 100 students. Combined in-school and out-of-school rate: 0.9 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
Asian 42.5%
White 39.5%
Two or More 7.5%
African American 5.3%
Hispanic or Latino 5.2%
Largest group: Asian at 42.5% of enrollment.
Student-body diversity index 65.2/100
Simpson diversity index - at 65.2, Jonas Clarke Middle is more mixed than the Massachusetts school average of 47.3.
Programs
Funding & spending
District-wide per-pupil expenditure for Lexington, which includes Jonas Clarke Middle.
$24,326
Per student
+8%
vs Massachusetts
Avg $22,458
+47%
vs U.S.
Avg $16,593
Revenue mix
Local 74.4%
State 22.1%
Federal 3.5%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Jonas Clarke Middle Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Lexington High | Larger | No free-lunch data | Higher S:T ratio |
| Wm Diamond Middle | Similar size | No free-lunch data | Similar S:T ratio |
| Maria Hastings | Smaller | No free-lunch data | Higher S:T ratio |
| Joseph Estabrook | Smaller | No free-lunch data | Higher S:T ratio |
| Bowman | Smaller | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Jonas Clarke Middle's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,405
- Students per teacher
- 12.8:1
- Resource Index
- 55/100
- Enrollment
- 936
- Students per teacher
- 10.1:1
- Resource Index
- 44/100
- Enrollment
- 579
- Students per teacher
- 11.4:1
- Resource Index
- 43/100
- Enrollment
- 490
- Students per teacher
- 11.4:1
- Resource Index
- 41/100
- Enrollment
- 429
- Students per teacher
- 11.6:1
- Resource Index
- 46/100
Similar middle schools in Lexington
1 comparable middle schools (grades 6-8) serving the same city.
Similar middle schools statewide
Matched by enrollment size and by staffing ratio across all of Massachusetts, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~796 students)
Similar student-teacher ratio (~9.1:1)
Next steps
Verify locally before acting on Jonas Clarke Middle's federal record.
- Compare Jonas Clarke Middle against another school. Compare schools
- Lexington's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Jonas Clarke Middle
How many students attend Jonas Clarke Middle?
Jonas Clarke Middle has 796 students enrolled. It is a middle school in Lexington, MA.
What is the student-teacher ratio at Jonas Clarke Middle?
The student-teacher ratio at Jonas Clarke Middle is 9.1:1, which is 26% lower than the Massachusetts average of 12.3:1 and 42% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Jonas Clarke Middle?
The largest demographic group at Jonas Clarke Middle is Asian at 42.5% of enrollment, in Lexington, MA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 65.2/100.
What is the Resource Investment Index for Jonas Clarke Middle?
Jonas Clarke Middle has a Resource Investment Index of 56/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Jonas Clarke Middle rank among public schools in Lexington?
By Resource Investment Index, Jonas Clarke Middle ranks #1 of 11 public schools in Lexington, MA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Lexington on the city page.
Is Jonas Clarke Middle a good school?
Jonas Clarke Middle earns 56/100 on the Resource Investment Index, with class sizes smaller than 88% of Massachusetts schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Lexington?
Besides Jonas Clarke Middle, Lexington also operates Lexington High (2,405 students), Wm Diamond Middle (936 students), and Maria Hastings (579 students). See the Lexington district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.