Enrollment
1,262
Massachusetts · 2024-25 NCES data
High school (grades 9-12) · Wellesley, MA
Wellesley Sr High
Federal NCES profile for Wellesley Sr High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 65/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 251227002030
👥 S:T ratio 56
📚 AP courses 100
🌟 Gifted program 30
🎓 Counselors 78
📋 Attendance 61
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Wellesley Sr High earns 65/100 on the Resource Investment Index, with class sizes near the Massachusetts median. It is also one of the largest schools in Massachusetts.
- #2 of 10
- public schools in Wellesley · Resource Index
- 65
- Resource Index · Higher
- 10.9:1
- students per teacher
- 1,262
- students enrolled
Wellesley Sr High has class sizes near the Massachusetts median. Computed live against every Massachusetts school reporting to NCES.
By Resource Investment Index, Wellesley Sr High ranks #2 of 10 public schools in Wellesley, MA.
School address
District: Wellesley · Massachusetts
NCES ID 251227002030 Verify on NCES CCD record →
Teachers (FTE)
116.0
Federal CCD staff survey
Students per teacher
10.9:1
vs 12.3:1 Massachusetts avg
-11% vs state
Student-teacher ratio in context
How Wellesley Sr High compares with Massachusetts and U.S. medians
What stands out at Wellesley Sr High
Wellesley Sr High is a large high school in Wellesley, Massachusetts, enrolling 1,262 students.
Class sizes run a bit leaner than typical: 10.9:1 puts it in the smaller third of Massachusetts schools by student-teacher ratio.
By headcount it is one of the larger campuses in Massachusetts, bigger than 96% of state schools at 1,262 students.
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 White (63%) and Asian (19%) (diversity index 56/100).
On the academic-pipeline side it reports 21 Advanced Placement courses.
Counselor coverage is strong, about 108 students per counselor, inside the American School Counselor Association's recommended 250:1.
15.8% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
The surrounding Wellesley spends $27,059 per pupil, 20% above the Massachusetts average, a better-resourced district than most.
Wellesley also operates Wellesley Middle (919 students) and Hunnewell (294 students) alongside Wellesley Sr High.
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 Wellesley Sr High compares
Wellesley Sr High on the metrics families compare, against Massachusetts and U.S. means.
| Metric | This school | vs Massachusetts | Massachusetts avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 10.9:1 | ▼ 11% | 12.3:1 | 15.7:1 |
| Enrollment | 1,262 | top 4% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.9:1
Leaner classes than 84% of US schools, among the more generously staffed nationally.
1,262
Bigger than 94% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
10.9:1
students per teacher
- 11% below state mean
Top 33% in Massachusetts - lower ratio than 67% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
15.8%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$27,059
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
Counselors11.7 FTE
Per 108 students, the combined health-and-guidance staffing load for this school.
Discipline context
10
in-school suspensions + 14 out-of-school
Suspension rate: 0.8 per 100 students. Combined in-school and out-of-school rate: 1.9 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
White 63.1%
Asian 18.7%
Two or More 7.2%
Hispanic or Latino 6.3%
African American 4.7%
Largest group: White at 63.1% of enrollment.
Student-body diversity index 55.6/100
Simpson diversity index - at 55.6, Wellesley Sr High is more mixed than the Massachusetts school average of 47.3.
Programs
AP courses offered 21
Funding & spending
District-wide per-pupil expenditure for Wellesley, which includes Wellesley Sr High.
$27,059
Per student
+20%
vs Massachusetts
Avg $22,458
+63%
vs U.S.
Avg $16,593
Revenue mix
Local 76.2%
State 21.3%
Federal 2.5%
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 Wellesley Sr High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Wellesley Middle | Smaller | No free-lunch data | Lower S:T ratio |
| Hunnewell | Smaller | No free-lunch data | Higher S:T ratio |
| Schofield | Smaller | No free-lunch data | Similar S:T ratio |
| Sprague Elementary School | Smaller | No free-lunch data | Similar S:T ratio |
| Katharine Lee Bates | Smaller | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Wellesley Sr High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 919
- Students per teacher
- 8.8:1
- Resource Index
- 60/100
- Enrollment
- 294
- Students per teacher
- 18.4:1
- Resource Index
- 46/100
- Enrollment
- 291
- Students per teacher
- 10.4:1
- Resource Index
- 55/100
- Enrollment
- 289
- Students per teacher
- 12:1
- Resource Index
- 54/100
- Enrollment
- 286
- Students per teacher
- 16.8:1
- Resource Index
- 47/100
Similar high 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 (~1,262 students)
Similar student-teacher ratio (~10.9:1)
Next steps
Verify locally before acting on Wellesley Sr High's federal record.
- Compare Wellesley Sr High against another school. Compare schools
- Wellesley'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 Wellesley Sr High
How many students attend Wellesley Sr High?
Wellesley Sr High has 1,262 students enrolled. It is a high school in Wellesley, MA.
What is the student-teacher ratio at Wellesley Sr High?
The student-teacher ratio at Wellesley Sr High is 10.9:1, which is 11% lower than the Massachusetts average of 12.3:1 and 31% 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 Wellesley Sr High?
The largest demographic group at Wellesley Sr High is White at 63.1% of enrollment, in Wellesley, MA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 55.6/100.
What is the Resource Investment Index for Wellesley Sr High?
Wellesley Sr High has a Resource Investment Index of 65/100 (higher reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Wellesley Sr High rank among public schools in Wellesley?
By Resource Investment Index, Wellesley Sr High ranks #2 of 10 public schools in Wellesley, 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 Wellesley on the city page.
Is Wellesley Sr High a good school?
Wellesley Sr High earns 65/100 on the Resource Investment Index, with class sizes near the Massachusetts median. It is also one of the largest schools in Massachusetts. 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 Wellesley?
Besides Wellesley Sr High, Wellesley also operates Wellesley Middle (919 students), Hunnewell (294 students), and Schofield (291 students). See the Wellesley 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.