Enrollment
551
Pennsylvania · 2024-25 NCES data
Elementary school (grades K-5) · Allentown, PA
Federal NCES profile for Mosser El Sch, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 28/100.
The verdict
Mosser El Sch earns 28/100 on the Resource Investment Index, with class sizes larger than 75% of Pennsylvania schools.
Mosser El Sch has class sizes larger than 75% of Pennsylvania schools. Computed live against every Pennsylvania school reporting to NCES.
By Resource Investment Index, Mosser El Sch ranks #17 of 21 elementary schools in Allentown, PA.
NCES ID 420228002779 Verify on NCES CCD record →
Enrollment
551
Pennsylvania · 2024-25 NCES data
Teachers (FTE)
37.0
Federal CCD staff survey
Students per teacher
14.9:1
vs 13.6:1 Pennsylvania avg
+10% vs state
Free-lunch eligible
100.0%
vs 58.1% Pennsylvania avg
+72% vs state
How Mosser El Sch compares with Pennsylvania and U.S. medians
Slightly above state median
14.9:1 - 1.3 above the Pennsylvania state median of 13.6:1, indicating larger average class loads than typical schools in the state.
Mosser El Sch is a high-poverty, mid-sized elementary school in Allentown, Pennsylvania, enrolling 551 students.
Class loads run somewhat heavier than typical: 14.9:1 puts it in the larger third of Pennsylvania schools by student-teacher ratio.
Economic need runs somewhat above the state's typical profile, with 100.0% of students eligible for free meals.
With 551 students, its enrollment sits close to the Pennsylvania median campus size.
Its Resource Investment Index trails 94% of the 2,889 Pennsylvania schools with a score on record, one of the lower results on this measure.
Among 505 similarly sized, similarly resourced-need Pennsylvania schools statewide, it ranks #400, in the lower tier once campus size and economic need are matched.
Its student body is led by Hispanic or Latino (76%) and Two or More (9%) (diversity index 40/100).
Counselor access is stretched at roughly 551 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 43.2% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 18.3% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Allentown's elementary schools, it stands alongside Brigadier General Anna Mae Hays El Sch (807 students): Mosser El Sch is smaller than that campus by headcount and runs leaner classes (14.9:1 vs 15.8:1).
Allentown City Sd also operates William Allen Hs (3,074 students) and Louis E Dieruff Hs (1,914 students) alongside Mosser El Sch.
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
Mosser El Sch on the metrics families compare, against Pennsylvania and U.S. means.
| Metric | This school | vs Pennsylvania | Pennsylvania avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 14.9:1 | ▲ 10% | 13.6:1 | 15.7:1 |
| Free-lunch eligible | 100.0% | ▲ 72% | 58.1% | 51.7% |
| Enrollment | 551 | top 36% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
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.
Largest group: Hispanic or Latino at 76.4% of enrollment.
Simpson diversity index - at 39.8, Mosser El Sch is more mixed than the Pennsylvania school average of 37.3.
District-wide per-pupil expenditure for Allentown City Sd, which includes Mosser El Sch.
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.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| William Allen Hs | Larger | Lower economic need | Higher S:T ratio |
| Louis E Dieruff Hs | Larger | Lower economic need | Higher S:T ratio |
| South Mountain Ms | Larger | Similar economic need | Similar S:T ratio |
| Francis D Raub Ms | Larger | Similar economic need | Higher S:T ratio |
| Brigadier General Anna Mae Hays El Sch | Larger | Similar economic need | Similar S:T ratio |
Comparisons are relative to Mosser El Sch's own figures; each column derives from NCES Common Core of Data.
6 comparable elementary schools (grades K-5) serving the same city.
Matched by enrollment size and by staffing ratio across all of Pennsylvania, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Mosser El Sch's federal record.
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.
Mosser El Sch has 551 students enrolled. It is an elementary school in Allentown, PA.
The student-teacher ratio at Mosser El Sch is 14.9:1, which is 10% higher than the Pennsylvania average of 13.6:1 and 5% lower than the national average of 15.7:1.
100.0% of students at Mosser El Sch are eligible for free lunch, compared to the Pennsylvania average of 58.1%.
The largest demographic group at Mosser El Sch is Hispanic or Latino at 76.4% of enrollment, in Allentown, PA.
Mosser El Sch has a Resource Investment Index of 28/100 (lower 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).
By Resource Investment Index, Mosser El Sch ranks #17 of 21 elementary schools in Allentown, PA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Allentown on the city page.
Mosser El Sch earns 28/100 on the Resource Investment Index, with class sizes larger than 75% of Pennsylvania 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.
Besides Mosser El Sch, Allentown City Sd also operates William Allen Hs (3,074 students), Louis E Dieruff Hs (1,914 students), and South Mountain Ms (972 students). See the Allentown City Sd district page for the complete list.
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.
Published by
PlainSchools Editorial
Independent public-data reference that compiles, verifies, and contextualizes official datasets. We do not accept compensation from entities we cover, and every dataset cites its originating public source.
Last updated:
PlainSchools, “Mosser El Sch, Allentown PA.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/mosser-el-sch-pa
You are welcome to quote these figures with attribution to PlainSchools and the underlying source. The URL above is stable.