Enrollment
365
Massachusetts · 2024-25 NCES data
Elementary school (grades K-5) · South Hadley, MA
Mosier
Federal NCES profile for Mosier, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
2024-25 NCES dataElementary school (grades K-5)NCES 251092002406
👥 S:T ratio 50
🌟 Gifted program 30
🎓 Counselors 64
📋 Attendance 27
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mosier earns 42/100 on the Resource Investment Index, with class sizes near the Massachusetts median.
- #2 of 5
- public schools in South Hadley · Resource Index
- 42
- Resource Index · Typical
- 12.6:1
- students per teacher
- 365
- students enrolled
Mosier has class sizes near the Massachusetts median. Computed live against every Massachusetts school reporting to NCES.
By Resource Investment Index, Mosier ranks #2 of 5 public schools in South Hadley, MA.
School address
District: South Hadley · Massachusetts
NCES ID 251092002406 Verify on NCES CCD record →
Teachers (FTE)
29.0
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 Mosier compares with Massachusetts and U.S. medians
What stands out at Mosier
Mosier is a mid-sized elementary school in South Hadley, Massachusetts, enrolling 365 students.
Class loads run somewhat heavier than typical: 12.6:1 puts it in the larger third of Massachusetts schools by student-teacher ratio.
With 365 students, its enrollment sits close to the Massachusetts median campus size.
Its Resource Investment Index sits near the middle of the pack among 1,831 scored Massachusetts schools.
Its student body is led by White (74%) and Hispanic or Latino (18%) (diversity index 42/100).
Counselor coverage is strong, about 183 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 29.3% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among South Hadley's elementary schools, it stands alongside Michael E. Smith Middle School (505 students): Mosier is smaller than that campus by headcount and runs heavier classes (12.6:1 vs 12.3:1).
South Hadley also operates Michael E. Smith Middle School (505 students) and South Hadley High (479 students) alongside Mosier.
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 Mosier compares
Mosier 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 | 365 | top 59% | - | - |
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.
365
Bigger than 42% of US schools by enrollment, mid-sized for the country.
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
29.3%
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
$18,249
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
Counselors2.0 FTE
Per 183 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 74.0%
Hispanic or Latino 18.1%
Two or More 4.9%
African American 1.6%
Asian 1.1%
American Indian / Alaska Native 0.3%
Largest group: White at 74.0% of enrollment.
Student-body diversity index 41.7/100
Simpson diversity index - at 41.7, Mosier is less mixed than the Massachusetts school average of 47.3.
Programs
Funding & spending
District-wide per-pupil expenditure for South Hadley, which includes Mosier.
$18,249
Per student
-19%
vs Massachusetts
Avg $22,458
+10%
vs U.S.
Avg $16,593
Revenue mix
Local 54.2%
State 36.9%
Federal 8.9%
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 Mosier Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Michael E. Smith Middle School | Larger | No free-lunch data | Similar S:T ratio |
| South Hadley High | Larger | No free-lunch data | Lower S:T ratio |
| Plains Elementary | Smaller | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Mosier's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 505
- Students per teacher
- 12.3:1
- Resource Index
- 37/100
- Enrollment
- 479
- Students per teacher
- 8.3:1
- Resource Index
- 44/100
- Enrollment
- 271
- Students per teacher
- 10.4:1
- Resource Index
- 42/100
Similar elementary schools in South Hadley
1 comparable elementary schools (grades K-5) serving the same city.
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 (~365 students)
Similar student-teacher ratio (~12.6:1)
Next steps
Verify locally before acting on Mosier's federal record.
- Compare Mosier against another school. Compare schools
- South Hadley'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 Mosier
How many students attend Mosier?
Mosier has 365 students enrolled. It is an elementary school in South Hadley, MA.
What is the student-teacher ratio at Mosier?
The student-teacher ratio at Mosier 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 Mosier?
The largest demographic group at Mosier is White at 74.0% of enrollment, in South Hadley, MA.
What is the Resource Investment Index for Mosier?
Mosier has a Resource Investment Index of 42/100 (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 Mosier rank among public schools in South Hadley?
By Resource Investment Index, Mosier ranks #2 of 5 public schools in South Hadley, 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 South Hadley on the city page.
Is Mosier a good school?
Mosier earns 42/100 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 South Hadley?
Besides Mosier, South Hadley also operates Michael E. Smith Middle School (505 students), South Hadley High (479 students), and Plains Elementary (271 students). See the South Hadley 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.