Enrollment
808
Massachusetts · 2024-25 NCES data
Elementary school (grades K-5) · Chelmsford, MA
Mccarthy Middle School
Federal NCES profile for Mccarthy Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 48/100.
2024-25 NCES dataElementary school (grades K-5)NCES 250351000478
👥 S:T ratio 50
🌟 Gifted program 30
🎓 Counselors 46
📋 Attendance 65
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mccarthy Middle School earns 48/100 on the Resource Investment Index, with class sizes near the Massachusetts median.
- #2 of 5
- elementary schools in Chelmsford · Resource Index
- 48
- Resource Index · Typical
- 12.6:1
- students per teacher
- 808
- students enrolled
Mccarthy Middle School has class sizes near the Massachusetts median. Computed live against every Massachusetts school reporting to NCES.
By Resource Investment Index, Mccarthy Middle School ranks #2 of 5 elementary schools in Chelmsford, MA.
School address
District: Chelmsford · Massachusetts
NCES ID 250351000478 Verify on NCES CCD record →
Teachers (FTE)
64.0
Federal CCD staff survey
Students per teacher
12.6:1
vs 12.3:1 Massachusetts avg
+2% vs state
Student-teacher ratio in context
How Mccarthy Middle School compares with Massachusetts and U.S. medians
What stands out at Mccarthy Middle School
Mccarthy Middle School is a large elementary school in Chelmsford, Massachusetts, enrolling 808 students.
Class loads run somewhat heavier than typical: 12.6:1 puts it in the larger third of Massachusetts schools by student-teacher ratio.
Enrollment of 808 puts it in the larger third of Massachusetts schools by headcount.
Its Resource Investment Index lands in the upper third of 1,831 scored Massachusetts schools.
Its student body is led by White (63%) and Asian (20%) (diversity index 55/100).
Counselor coverage runs a bit thin, about 269 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
13.9% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding Chelmsford spends $17,638 per pupil, 21% below the Massachusetts average, a leaner-resourced district than most.
Among Chelmsford's elementary schools, it stands alongside Col Moses Parker School (778 students): Mccarthy Middle School is larger than that campus by headcount and runs heavier classes (12.6:1 vs 12.2:1).
Chelmsford also operates Chelmsford High (1,402 students) and Col Moses Parker School (778 students) alongside Mccarthy Middle School.
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 Mccarthy Middle School compares
Mccarthy Middle School on the metrics families compare, against Massachusetts and U.S. means.
| Metric | This school | vs Massachusetts | Massachusetts avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12.6:1 | ▲ 2% | 12.3:1 | 15.7:1 |
| Enrollment | 808 | top 13% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.6:1
Leaner classes than 70% of US schools, among the more generously staffed nationally.
808
Bigger than 86% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
12.6:1
students per teacher
- 2% above state mean
Top 62% in Massachusetts - lower ratio than 38% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
13.9%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$17,638
per pupil, district-wide
- below Massachusetts avg of $22,458
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors3.0 FTE
Per 269 students, the combined health-and-guidance staffing load for this school.
Discipline context
5
in-school suspensions + 25 out-of-school
Suspension rate: 0.6 per 100 students. Combined in-school and out-of-school rate: 3.7 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
White 63.0%
Asian 20.3%
Hispanic or Latino 7.8%
African American 4.5%
Two or More 4.2%
American Indian / Alaska Native 0.1%
Native Hawaiian / Pacific Islander 0.1%
Largest group: White at 63.0% of enrollment.
Student-body diversity index 55.2/100
Simpson diversity index - at 55.2, Mccarthy Middle School is more mixed than the Massachusetts school average of 47.3.
Programs
Funding & spending
District-wide per-pupil expenditure for Chelmsford, which includes Mccarthy Middle School.
$17,638
Per student
-21%
vs Massachusetts
Avg $22,458
+6%
vs U.S.
Avg $16,593
Revenue mix
Local 67.8%
State 25.7%
Federal 6.5%
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 Mccarthy Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Chelmsford High | Larger | No free-lunch data | Similar S:T ratio |
| Col Moses Parker School | Similar size | No free-lunch data | Similar S:T ratio |
| Byam School | Smaller | No free-lunch data | Similar S:T ratio |
| Center Elementary School | Smaller | No free-lunch data | Similar S:T ratio |
| Charles D Harrington | Smaller | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Mccarthy Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,402
- Students per teacher
- 14:1
- Resource Index
- 47/100
- Enrollment
- 778
- Students per teacher
- 12.2:1
- Resource Index
- 40/100
- Enrollment
- 510
- Students per teacher
- 13.1:1
- Resource Index
- 32/100
- Enrollment
- 480
- Students per teacher
- 13.7:1
- Resource Index
- 38/100
- Enrollment
- 468
- Students per teacher
- 14.6:1
- Resource Index
- 34/100
Similar elementary schools in Chelmsford
4 comparable elementary schools (grades K-5) serving the same city.
Col Moses Parker School
Standard public school
778 students 12.2:1 students per teacher
Byam School
Standard public school
510 students 13.1:1 students per teacher
Center Elementary School
Standard public school
480 students 13.7:1 students per teacher
South Row
Standard public school
464 students 13.6:1 students per teacher
Similar elementary 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 (~808 students)
Similar student-teacher ratio (~12.6:1)
Next steps
Verify locally before acting on Mccarthy Middle School's federal record.
- Compare Mccarthy Middle School against another school. Compare schools
- Chelmsford'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 Mccarthy Middle School
How many students attend Mccarthy Middle School?
Mccarthy Middle School has 808 students enrolled. It is an elementary school in Chelmsford, MA.
What is the student-teacher ratio at Mccarthy Middle School?
The student-teacher ratio at Mccarthy Middle School is 12.6:1, which is 2% higher than the Massachusetts average of 12.3:1 and 20% lower than the national average of 15.7:1.
What is the racial and ethnic makeup of Mccarthy Middle School?
The largest demographic group at Mccarthy Middle School is White at 63.0% of enrollment, in Chelmsford, MA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 55.2/100.
What is the Resource Investment Index for Mccarthy Middle School?
Mccarthy Middle School has a Resource Investment Index of 48/100 (typical 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 Mccarthy Middle School rank among elementary schools in Chelmsford?
By Resource Investment Index, Mccarthy Middle School ranks #2 of 5 elementary schools in Chelmsford, MA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Chelmsford on the city page.
Is Mccarthy Middle School a good school?
Mccarthy Middle School earns 48/100 on the Resource Investment Index, with class sizes near the Massachusetts median. 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 Chelmsford?
Besides Mccarthy Middle School, Chelmsford also operates Chelmsford High (1,402 students), Col Moses Parker School (778 students), and Byam School (510 students). See the Chelmsford 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.