Enrollment
583
Pennsylvania · 2024-25 NCES data
Middle school (grades 6-8) · Carlisle, PA
Lamberton Ms
Federal NCES profile for Lamberton Ms, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 62/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 420501007011
👥 S:T ratio 44
🌟 Gifted program 70
🎓 Counselors 42
📋 Attendance 92
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Lamberton Ms earns 62/100 on the Resource Investment Index, with class sizes near the Pennsylvania median.
- #1 of 10
- public schools in Carlisle · Resource Index
- 62
- Resource Index · Higher
- 13.9:1
- students per teacher
- 40.0%
- free-lunch eligible
Lamberton Ms has class sizes near the Pennsylvania median. Computed live against every Pennsylvania school reporting to NCES.
By Resource Investment Index, Lamberton Ms ranks #1 of 10 public schools in Carlisle, PA.
School address
District: Carlisle Area Sd · Pennsylvania
NCES ID 420501007011 Verify on NCES CCD record →
Teachers (FTE)
42.0
Federal CCD staff survey
Students per teacher
13.9:1
vs 13.6:1 Pennsylvania avg
+2% vs state
Free-lunch eligible
40.0%
vs 58.1% Pennsylvania avg
-31% vs state
Student-teacher ratio in context
How Lamberton Ms compares with Pennsylvania and U.S. medians
What stands out at Lamberton Ms
Lamberton Ms is a mid-sized middle school in Carlisle, Pennsylvania, enrolling 583 students.
At 13.9:1, its student-teacher ratio sits close to the Pennsylvania median, within a few percentage points of the 13.6:1 state norm, neither notably crowded nor notably small.
Economic need runs somewhat below the state's typical profile, with 40.0% of students eligible for free meals.
Enrollment of 583 puts it in the larger third of Pennsylvania schools by headcount.
Its Resource Investment Index outscores 94% of the 2,889 Pennsylvania schools with a score on record, a top-tier result on this measure.
Among 638 similarly sized, similarly resourced-need Pennsylvania schools statewide, it ranks #16, a top-tier result once campus size and economic need are matched.
Its student body is led by White (63%) and African American (12%) (diversity index 57/100).
Counselor coverage runs a bit thin, about 292 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Attendance holds up well here: only 3.1% of students were chronically absent, below the typical post-pandemic national figure.
Discipline events run high: 136 in- and out-of-school suspensions were reported for 583 students in the 2021-22 Civil Rights Data Collection.
The federal civil-rights collection also records 3 expulsions at this campus for 2021-22.
Among Carlisle's middle schools, it stands alongside Wilson Ms (604 students): Lamberton Ms is smaller than that campus by headcount and runs heavier classes (13.9:1 vs 13.7:1).
Carlisle Area Sd also operates Carlisle Area Hs (1,559 students) and Wilson Ms (604 students) alongside Lamberton Ms.
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 Lamberton Ms compares
Lamberton Ms on the metrics families compare, against Pennsylvania and U.S. means.
| Metric | This school | vs Pennsylvania | Pennsylvania avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.9:1 | ▲ 2% | 13.6:1 | 15.7:1 |
| Free-lunch eligible | 40.0% | ▼ 31% | 58.1% | 51.7% |
| Enrollment | 583 | top 31% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.9:1
Leaner classes than 58% of US schools, a middle-of-the-pack class size.
583
Bigger than 71% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
40.0%
free-lunch eligible
- 31% below the Pennsylvania average of 58.1%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
13.9:1
students per teacher
- 2% above state mean
Top 60% in Pennsylvania - lower ratio than 40% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
3.1%
chronically absent (missed 10%+ of school days)
Below 5%, comfortably under the pre-pandemic national baseline for chronic absenteeism.
Funding equity
$15,072
per pupil, district-wide
- below Pennsylvania avg of $17,970
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors2.0 FTE
Per 292 students, the combined health-and-guidance staffing load for this school.
Discipline context
78
in-school suspensions + 58 out-of-school
Suspension rate: 13.4 per 100 students. Combined in-school and out-of-school rate: 23.3 per 100 students. Reported via the Civil Rights Data Collection. Includes 3 expulsions.
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 62.8%
African American 11.7%
Hispanic or Latino 11.7%
Two or More 10.6%
Asian 2.7%
Native Hawaiian / Pacific Islander 0.3%
American Indian / Alaska Native 0.2%
Largest group: White at 62.8% of enrollment.
Student-body diversity index 56.6/100
Simpson diversity index - at 56.6, Lamberton Ms is more mixed than the Pennsylvania school average of 37.3.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Carlisle Area Sd, which includes Lamberton Ms.
$15,072
Per student
-16%
vs Pennsylvania
Avg $17,970
-9%
vs U.S.
Avg $16,593
Revenue mix
Local 62.9%
State 28.3%
Federal 8.7%
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 Lamberton Ms Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Carlisle Area Hs | Larger | Similar economic need | Similar S:T ratio |
| Wilson Ms | Similar size | Similar economic need | Similar S:T ratio |
| Crestview El Sch | Similar size | Similar economic need | Higher S:T ratio |
| Bellaire El Sch | Smaller | Higher economic need | Similar S:T ratio |
| Hamilton El Sch | Smaller | Higher economic need | Similar S:T ratio |
Comparisons are relative to Lamberton Ms's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,559
- Students per teacher
- 13.9:1
- Resource Index
- 62/100
- Enrollment
- 604
- Students per teacher
- 13.7:1
- Resource Index
- 53/100
- Enrollment
- 541
- Students per teacher
- 18.7:1
- Resource Index
- 35/100
- Enrollment
- 407
- Students per teacher
- 15.1:1
- Resource Index
- 49/100
- Enrollment
- 388
- Students per teacher
- 13.4:1
- Resource Index
- 48/100
Similar middle schools in Carlisle
1 comparable middle schools (grades 6-8) serving the same city.
Similar middle schools statewide
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.
Similar enrollment (~583 students)
Similar student-teacher ratio (~13.9:1)
Next steps
Verify locally before acting on Lamberton Ms's federal record.
- Compare Lamberton Ms against another school. Compare schools
- Carlisle Area Sd'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 Lamberton Ms
How many students attend Lamberton Ms?
Lamberton Ms has 583 students enrolled. It is a middle school in Carlisle, PA.
What is the student-teacher ratio at Lamberton Ms?
The student-teacher ratio at Lamberton Ms is 13.9:1, which is 2% higher than the Pennsylvania average of 13.6:1 and 11% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Lamberton Ms?
40.0% of students at Lamberton Ms are eligible for free lunch, compared to the Pennsylvania average of 58.1%.
What is the racial and ethnic makeup of Lamberton Ms?
The largest demographic group at Lamberton Ms is White at 62.8% of enrollment, in Carlisle, PA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 56.6/100.
What is the Resource Investment Index for Lamberton Ms?
Lamberton Ms has a Resource Investment Index of 62/100 (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).
How does Lamberton Ms rank among public schools in Carlisle?
By Resource Investment Index, Lamberton Ms ranks #1 of 10 public schools in Carlisle, PA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Carlisle on the city page.
Is Lamberton Ms a good school?
Lamberton Ms earns 62/100 on the Resource Investment Index, with class sizes near the Pennsylvania 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 Carlisle Area Sd?
Besides Lamberton Ms, Carlisle Area Sd also operates Carlisle Area Hs (1,559 students), Wilson Ms (604 students), and Crestview El Sch (541 students). See the Carlisle Area Sd 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.