- Enrollment
- 942
- Students per teacher
- 9.9:1
- Resource Index
- 43/100
Elementary school (grades K-5) · Groton, CT
Catherine Kolnaski Magnet School
Federal NCES profile for Catherine Kolnaski Magnet School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 36/100.
2024-25 NCES dataElementary school (grades K-5)NCES 090177001494
👥 S:T ratio 53
🌟 Gifted program 30
📋 Attendance 26
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Catherine Kolnaski Magnet School earns 36/100 on the Resource Investment Index, with class sizes near the Connecticut median. It is also more racially and ethnically mixed than most Connecticut schools.
- #7 of 7
- public schools in Groton · Resource Index
- 36
- Resource Index · Typical
- 11.7:1
- students per teacher
- 45.5%
- free-lunch eligible
Catherine Kolnaski Magnet School has class sizes near the Connecticut median. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Catherine Kolnaski Magnet School ranks #7 of 7 public schools in Groton, CT.
School address
District: Groton School District · Connecticut
NCES ID 090177001494 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+17 students YoY
Catherine Kolnaski Magnet School held near 369 students from 2022-23 to 2023-24 (+17 headcount).
Teacher FTE added 32.4 → 32.8 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+17 students YoY 090177001494 · Groton, CT Elementary · SMALL · TRAD
375 enr · 11.7:1 · 45.5% lunch · RII 36
Nearest enrollment peer: Robert E. Fitch High School (942 students)
Catherine Kolnaski Magnet School held near 369 students from 2022-23 to 2023-24 (+17 headcount). Teacher FTE added 32.4 → 32.8 across the same CCD years. Read with this school → · District book → · Connecticut schools → · Find another →
Catherine Kolnaski 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 375
Catherine Kolnaski Magnet School
375 students
What this shows Catherine Kolnaski Magnet School reports 375 students on the CCD universe file.
How Catherine Kolnaski Magnet School compares
Catherine Kolnaski 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 | 11.7:1 | ▼ 3% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 45.5% | ▲ 25% | 36.4% | 51.7% |
| Enrollment | 375 | top 57% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
11.7:1
Leaner classes than 78% of US schools, among the more generously staffed nationally.
375
Bigger than 44% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
45.5%
free-lunch eligible
- 25% above the Connecticut average of 36.4%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
11.7:1
students per teacher
- 3% below state mean
Top 52% in Connecticut - lower ratio than 48% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
29.6%
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
9
in-school suspensions + 1 out-of-school
Suspension rate: 2.4 per 100 students. Combined in-school and out-of-school rate: 2.7 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 38.4%
Hispanic or Latino 30.4%
Two or More 17.9%
Asian 8.0%
African American 4.8%
American Indian / Alaska Native 0.5%
Largest group: White at 38.4% of enrollment.
Student-body diversity index 71.9/100
Simpson diversity index - at 71.9, Catherine Kolnaski 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 Catherine Kolnaski Magnet School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Robert E. Fitch High School | Larger | Lower economic need | Lower S:T ratio |
| Groton Middle School | Larger | Similar economic need | Similar S:T ratio |
| Mystic River Magnet School | Larger | Similar economic need | Similar S:T ratio |
| Thames River Magnet School | Larger | Similar economic need | Similar S:T ratio |
| Northeast Academy Magnet School | Similar size | Lower economic need | Similar S:T ratio |
Comparisons are relative to Catherine Kolnaski 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
Nationwide elementary 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 (~375 students)
Frequently asked questions about Catherine Kolnaski Magnet School
How many students attend Catherine Kolnaski Magnet School?
Catherine Kolnaski Magnet School has 375 students enrolled. It is an elementary school in Groton, CT. CCD year-over-year: 352 (2022-23) → 369 (2023-24), nearly flat (+17).
What is the student-teacher ratio at Catherine Kolnaski Magnet School?
The student-teacher ratio at Catherine Kolnaski Magnet School is 11.7:1, which is 3% lower than the Connecticut average of 12.1:1 and 25% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Catherine Kolnaski Magnet School?
45.5% of students at Catherine Kolnaski Magnet School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Catherine Kolnaski Magnet School?
The largest demographic group at Catherine Kolnaski Magnet School is White at 38.4% of enrollment, in Groton, CT. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 71.9/100.
What is the Resource Investment Index for Catherine Kolnaski Magnet School?
Catherine Kolnaski Magnet School has a Resource Investment Index of 36/100 (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 Catherine Kolnaski Magnet School rank among public schools in Groton?
By Resource Investment Index, Catherine Kolnaski Magnet School ranks #7 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 Catherine Kolnaski 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.