Enrollment
510
Massachusetts · 2024-25 NCES data
Elementary school (grades K-5) · Chelmsford, MA
Byam School
Federal NCES profile for Byam School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 32/100.
2024-25 NCES dataElementary school (grades K-5)NCES 250351000472
👥 S:T ratio 48
🌟 Gifted program 30
🎓 Counselors 0
📋 Attendance 50
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Byam School earns 32/100 on the Resource Investment Index, with class sizes near the Massachusetts median.
- #5 of 5
- elementary schools in Chelmsford · Resource Index
- 32
- Resource Index · Typical
- 13.1:1
- students per teacher
- 510
- students enrolled
Byam School has class sizes near the Massachusetts median. Computed live against every Massachusetts school reporting to NCES.
By Resource Investment Index, Byam School ranks #5 of 5 elementary schools in Chelmsford, MA.
School address
District: Chelmsford · Massachusetts
NCES ID 250351000472 Verify on NCES CCD record →
Teachers (FTE)
39.0
Federal CCD staff survey
Students per teacher
13.1:1
vs 12.3:1 Massachusetts avg
+7% vs state
Student-teacher ratio in context
How Byam School compares with Massachusetts and U.S. medians
What stands out at Byam School
Byam School is a mid-sized elementary school in Chelmsford, Massachusetts, enrolling 510 students.
Class loads run somewhat heavier than typical: 13.1:1 puts it in the larger third of Massachusetts schools by student-teacher ratio.
Enrollment of 510 puts it in the larger third of Massachusetts schools by headcount.
Its Resource Investment Index lands in the lower third of 1,831 scored Massachusetts schools.
Its student body is led by White (65%) and Asian (15%) (diversity index 54/100).
Counselor access is stretched at roughly 510 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance runs somewhat below the norm, with 20.2% of students chronically absent per the 2021-22 civil-rights collection.
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 Mccarthy Middle School (808 students): Byam School is smaller than that campus by headcount and runs heavier classes (13.1:1 vs 12.6:1).
Chelmsford also operates Chelmsford High (1,402 students) and Mccarthy Middle School (808 students) alongside Byam 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 Byam School compares
Byam 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 | 13.1:1 | ▲ 7% | 12.3:1 | 15.7:1 |
| Enrollment | 510 | top 35% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.1:1
Leaner classes than 66% of US schools, among the more generously staffed nationally.
510
Bigger than 63% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
13.1:1
students per teacher
- 7% above state mean
Top 69% in Massachusetts - lower ratio than 31% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
20.2%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
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
Counselors1.0 FTE
Per 510 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 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 65.1%
Asian 14.5%
Hispanic or Latino 11.2%
Two or More 4.7%
African American 3.7%
Native Hawaiian / Pacific Islander 0.6%
American Indian / Alaska Native 0.2%
Largest group: White at 65.1% of enrollment.
Student-body diversity index 53.9/100
Simpson diversity index - at 53.9, Byam School is more mixed than the Massachusetts school average of 47.3.
Programs
Funding & spending
District-wide per-pupil expenditure for Chelmsford, which includes Byam 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 Byam School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Chelmsford High | Larger | No free-lunch data | Similar S:T ratio |
| Mccarthy Middle School | Larger | No free-lunch data | Similar S:T ratio |
| Col Moses Parker School | Larger | No free-lunch data | Similar S:T ratio |
| Center Elementary School | Similar size | No free-lunch data | Similar S:T ratio |
| Charles D Harrington | Similar size | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Byam 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
- 808
- Students per teacher
- 12.6:1
- Resource Index
- 48/100
- Enrollment
- 778
- Students per teacher
- 12.2:1
- Resource Index
- 40/100
- 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.
Mccarthy Middle School
Standard public school
808 students 12.6:1 students per teacher
Col Moses Parker School
Standard public school
778 students 12.2:1 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 (~510 students)
Similar student-teacher ratio (~13.1:1)
Next steps
Verify locally before acting on Byam School's federal record.
- Compare Byam 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 Byam School
How many students attend Byam School?
Byam School has 510 students enrolled. It is an elementary school in Chelmsford, MA.
What is the student-teacher ratio at Byam School?
The student-teacher ratio at Byam School is 13.1:1, which is 7% higher than the Massachusetts average of 12.3:1 and 17% lower than the national average of 15.7:1.
What is the racial and ethnic makeup of Byam School?
The largest demographic group at Byam School is White at 65.1% of enrollment, in Chelmsford, MA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 53.9/100.
What is the Resource Investment Index for Byam School?
Byam School has a Resource Investment Index of 32/100 (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 Byam School rank among elementary schools in Chelmsford?
By Resource Investment Index, Byam School ranks #5 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 Byam School a good school?
Byam School earns 32/100 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 Byam School, Chelmsford also operates Chelmsford High (1,402 students), Mccarthy Middle School (808 students), and Col Moses Parker School (778 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.