- Enrollment
- 942
- Students per teacher
- 9.9:1
- Resource Index
- 43/100
Other / mixed grade configuration · Groton, CT
Charles Barnum Magnet School
Federal NCES profile for Charles Barnum Magnet School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 38/100.
2024-25 NCES dataOther / mixed grade configurationNCES 090177000313
👥 S:T ratio 52
🌟 Gifted program 30
📋 Attendance 33
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Charles Barnum Magnet School earns 38/100 on the Resource Investment Index, with class sizes near the Connecticut median.
- #6 of 7
- public schools in Groton · Resource Index
- 38
- Resource Index · Typical
- 12.1:1
- students per teacher
- 26.5%
- free-lunch eligible
Charles Barnum Magnet School has class sizes near the Connecticut median. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Charles Barnum Magnet School ranks #6 of 7 public schools in Groton, CT.
School address
District: Groton School District · Connecticut
NCES ID 090177000313 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-15 students YoY
Charles Barnum Magnet School held near 332 students from 2022-23 to 2023-24 (-15 headcount).
Teacher FTE added 28.0 → 28.8 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-15 students YoY 090177000313 · Groton, CT Other · SMALL · TRAD
339 enr · 12.1:1 · 26.5% lunch · RII 38
Nearest enrollment peer: Robert E. Fitch High School (942 students)
Charles Barnum Magnet School held near 332 students from 2022-23 to 2023-24 (-15 headcount). Teacher FTE added 28.0 → 28.8 across the same CCD years. Read with this school → · District book → · Connecticut schools → · Find another →
Charles Barnum Magnet School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Robert E. Fitc
Robert E. Fitch High School
942 students
- Groton Middle
Groton Middle School
884 students
- Mystic River M
Mystic River Magnet School
520 students
- Thames River M
Thames River Magnet School
501 students
- Northeast Acad
Northeast Academy Magnet School
392 students
- This school 339
Charles Barnum Magnet School
339 students
What this shows Charles Barnum Magnet School reports 339 students on the CCD universe file.
How Charles Barnum Magnet School compares
Charles Barnum Magnet School held steady on CCD headcount: ratios and free-lunch share vs Connecticut and U.S. means.
| Metric | This school | vs Connecticut | Connecticut avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12.1:1 | ▼ 0% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 26.5% | ▼ 27% | 36.4% | 51.7% |
| Enrollment | 339 | top 67% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.1:1
Leaner classes than 75% of US schools, among the more generously staffed nationally.
339
Bigger than 38% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
26.5%
free-lunch eligible
- 27% below the Connecticut average of 36.4%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
12.1:1
students per teacher
- 0% above state mean
Top 60% in Connecticut - lower ratio than 40% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
26.8%
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
$24,584
per pupil, district-wide
- below Connecticut avg of $24,680
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
2
in-school suspensions + 5 out-of-school
Suspension rate: 0.6 per 100 students. Combined in-school and out-of-school rate: 2.1 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 51.3%
Hispanic or Latino 27.4%
Two or More 11.5%
African American 7.1%
Asian 2.4%
Native Hawaiian / Pacific Islander 0.3%
Largest group: White at 51.3% of enrollment.
Student-body diversity index 64.3/100
Simpson diversity index - at 64.3, Charles Barnum Magnet School is more mixed than the Connecticut school average of 50.5.
Programs
District finance for Groton School District reports $24,584 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Charles Barnum Magnet School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Robert E. Fitch High School | Larger | Similar economic need | Lower S:T ratio |
| Groton Middle School | Larger | Higher economic need | Similar S:T ratio |
| Mystic River Magnet School | Larger | Similar economic need | Similar S:T ratio |
| Thames River Magnet School | Larger | Higher economic need | Similar S:T ratio |
| Northeast Academy Magnet School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Charles Barnum Magnet School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 884
- Students per teacher
- 11.5:1
- Resource Index
- 44/100
- Enrollment
- 520
- Students per teacher
- 12.7:1
- Resource Index
- 42/100
- Enrollment
- 501
- Students per teacher
- 11.7:1
- Resource Index
- 58/100
- Enrollment
- 392
- Students per teacher
- 12.6:1
- Resource Index
- 46/100
Similar other schools in Groton
1 comparable other schools (grades Mixed) serving the same city.
Nationwide other schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~339 students)
Frequently asked questions about Charles Barnum Magnet School
How many students attend Charles Barnum Magnet School?
Charles Barnum Magnet School has 339 students enrolled. It is a public school in Groton, CT. CCD year-over-year: 347 (2022-23) → 332 (2023-24), nearly flat (-15).
What is the student-teacher ratio at Charles Barnum Magnet School?
The student-teacher ratio at Charles Barnum Magnet School is 12.1:1, which is 0% higher than the Connecticut average of 12.1:1 and 23% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Charles Barnum Magnet School?
26.5% of students at Charles Barnum Magnet School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Charles Barnum Magnet School?
The largest demographic group at Charles Barnum Magnet School is White at 51.3% of enrollment, in Groton, CT. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 64.3/100.
What is the Resource Investment Index for Charles Barnum Magnet School?
Charles Barnum Magnet School has a Resource Investment Index of 38/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, gifted-program reporting, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Charles Barnum Magnet School rank among public schools in Groton?
By Resource Investment Index, Charles Barnum Magnet School ranks #6 of 7 public schools in Groton, CT. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Groton on the city page.
What other schools are in Groton School District?
Besides Charles Barnum Magnet School, Groton School District also operates Robert E. Fitch High School (942 students), Groton Middle School (884 students), and Mystic River Magnet School (520 students). See the Groton School District district page for the complete list.