Enrollment
375
Pennsylvania · 2024-25 NCES data
Elementary school (grades K-5) · Lock Haven, PA
Federal NCES profile for Robb El Sch, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 50/100.
The verdict
Robb El Sch earns 50/100 on the Resource Investment Index, with class sizes smaller than 96% of Pennsylvania schools.
Robb El Sch has class sizes smaller than 96% of Pennsylvania schools. Computed live against every Pennsylvania school reporting to NCES.
NCES ID 421272506245 Verify on NCES CCD record →
Enrollment
375
Pennsylvania · 2024-25 NCES data
Teachers (FTE)
41.0
Federal CCD staff survey
Students per teacher
9.1:1
vs 13.6:1 Pennsylvania avg
-33% vs state
Free-lunch eligible
77.2%
vs 58.1% Pennsylvania avg
+33% vs state
How Robb El Sch compares with Pennsylvania and U.S. medians
Smaller classes than state median
9.1:1 - 4.5 below the Pennsylvania state median of 13.6:1, indicating smaller average class loads than typical schools in the state.
Robb El Sch is a high-poverty, mid-sized elementary school in Lock Haven, Pennsylvania, enrolling 375 students.
Classes run notably small here: at 9.1:1, Robb El Sch is leaner than roughly 96% of Pennsylvania schools and 33% under the state's 13.6:1 norm, more adult attention per pupil than most peers.
Economic need runs somewhat above the state's typical profile, with 77.2% of students eligible for free meals.
With 375 students, its enrollment sits close to the Pennsylvania median campus size.
Its Resource Investment Index sits near the middle of the pack among 2,889 scored Pennsylvania schools.
Against 100 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #23.
Its student body is led by White (80%) and Two or More (9%) (diversity index 35/100).
Counselor coverage is strong, about 188 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 37.9% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Lock Haven's elementary schools, it stands alongside Woodward El Sch (215 students): Robb El Sch is larger than that campus by headcount and runs leaner classes (9.1:1 vs 15.4:1).
Keystone Central Sd also operates Central Mountain Hs (1,013 students) and Central Mountain Ms (879 students) alongside Robb 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
Robb 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 | 9.1:1 | ▼ 33% | 13.6:1 | 15.7:1 |
| Free-lunch eligible | 77.2% | ▲ 33% | 58.1% | 51.7% |
| Enrollment | 375 | top 65% | - | - |
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: White at 79.5% of enrollment.
Simpson diversity index - at 35.3, Robb El Sch is less mixed than the Pennsylvania school average of 37.3.
District-wide per-pupil expenditure for Keystone Central Sd, which includes Robb 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 |
|---|---|---|---|
| Central Mountain Hs | Larger | Lower economic need | Higher S:T ratio |
| Central Mountain Ms | Larger | Lower economic need | Higher S:T ratio |
| Mill Hall El Sch | Similar size | Lower economic need | Higher S:T ratio |
| Woodward El Sch | Smaller | Lower economic need | Higher S:T ratio |
| Renovo El Sch | Smaller | Lower economic need | Higher S:T ratio |
Comparisons are relative to Robb El Sch's own figures; each column derives from NCES Common Core of Data.
1 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 Robb 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.
Robb El Sch has 375 students enrolled. It is an elementary school in Lock Haven, PA.
The student-teacher ratio at Robb El Sch is 9.1:1, which is 33% lower than the Pennsylvania average of 13.6:1 and 42% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
77.2% of students at Robb El Sch are eligible for free lunch, compared to the Pennsylvania average of 58.1%.
The largest demographic group at Robb El Sch is White at 79.5% of enrollment, in Lock Haven, PA.
Robb El Sch has a Resource Investment Index of 50/100 (higher 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).
Robb El Sch earns 50/100 on the Resource Investment Index, with class sizes smaller than 96% 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 Robb El Sch, Keystone Central Sd also operates Central Mountain Hs (1,013 students), Central Mountain Ms (879 students), and Mill Hall El Sch (318 students). See the Keystone Central 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.
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PlainSchools, “Robb El Sch, Lock Haven 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/robb-el-sch-pa
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