- Enrollment
- 942
- Students per teacher
- 9.9:1
- Resource Index
- 43/100
Other / mixed grade configuration · Groton, CT
Thames River Magnet School
Federal NCES profile for Thames River Magnet School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 58/100.
2024-25 NCES dataOther / mixed grade configurationNCES 090177000321
👥 S:T ratio 53
🌟 Gifted program 70
📋 Attendance 50
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Thames River Magnet School earns 58/100 on the Resource Investment Index, with class sizes near the Connecticut median. It is also more racially and ethnically mixed than most Connecticut schools.
- #1 of 7
- public schools in Groton · Resource Index
- 58
- Resource Index · Higher
- 11.7:1
- students per teacher
- 37.5%
- free-lunch eligible
Thames River Magnet School has class sizes near the Connecticut median. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Thames River Magnet School ranks #1 of 7 public schools in Groton, CT.
School address
District: Groton School District · Connecticut
NCES ID 090177000321 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+3 students YoY
Thames River Magnet School held near 531 students from 2022-23 to 2023-24 (+3 headcount).
Teacher FTE lost 43.4 → 42.8 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+3 students YoY 090177000321 · Groton, CT Other · MID · TRAD
501 enr · 11.7:1 · 37.5% lunch · RII 58
Nearest enrollment peer: Robert E. Fitch High School (942 students)
Thames River Magnet School held near 531 students from 2022-23 to 2023-24 (+3 headcount). Teacher FTE lost 43.4 → 42.8 across the same CCD years. Read with this school → · District book → · Connecticut schools → · Find another →
Thames River 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
- This school
Thames River Magnet School
501 students
- Northeast Acad
Northeast Academy Magnet School
392 students
- Catherine Koln 375
Catherine Kolnaski Magnet School
375 students
What this shows Thames River Magnet School reports 501 students on the CCD universe file.
How Thames River Magnet School compares
Thames River 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 | 37.5% | ▲ 3% | 36.4% | 51.7% |
| Enrollment | 501 | top 33% | - | - |
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.
501
Bigger than 62% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
37.5%
free-lunch eligible
- 3% above the Connecticut average of 36.4%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
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
20.0%
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
8
in-school suspensions + 6 out-of-school
Suspension rate: 1.6 per 100 students. Combined in-school and out-of-school rate: 2.8 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 39.9%
Hispanic or Latino 25.3%
Two or More 16.2%
African American 9.6%
Asian 7.8%
American Indian / Alaska Native 1.0%
Native Hawaiian / Pacific Islander 0.2%
Largest group: White at 39.9% of enrollment.
Student-body diversity index 73.5/100
Simpson diversity index - at 73.5, Thames River Magnet School is more mixed than the Connecticut school average of 50.5.
Programs
Gifted & talented Yes
District finance for Groton School District reports $24,584 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Thames River 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 | Similar economic need | Similar S:T ratio |
| Mystic River Magnet School | Similar size | Similar economic need | Similar S:T ratio |
| Northeast Academy Magnet School | Similar size | Lower economic need | Similar S:T ratio |
| Catherine Kolnaski Magnet School | Smaller | Similar economic need | Similar S:T ratio |
Comparisons are relative to Thames River 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
- 392
- Students per teacher
- 12.6:1
- Resource Index
- 46/100
- Enrollment
- 375
- Students per teacher
- 11.7:1
- Resource Index
- 36/100
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 (~501 students)
Similar student-teacher ratio (~11.7:1)
Frequently asked questions about Thames River Magnet School
How many students attend Thames River Magnet School?
Thames River Magnet School has 501 students enrolled. It is a public school in Groton, CT. CCD year-over-year: 528 (2022-23) → 531 (2023-24), nearly flat (+3).
What is the student-teacher ratio at Thames River Magnet School?
The student-teacher ratio at Thames River 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 Thames River Magnet School?
37.5% of students at Thames River Magnet School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Thames River Magnet School?
The largest demographic group at Thames River Magnet School is White at 39.9% of enrollment, in Groton, CT. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 73.5/100.
What is the Resource Investment Index for Thames River Magnet School?
Thames River Magnet School has a Resource Investment Index of 58/100 (higher 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 Thames River Magnet School rank among public schools in Groton?
By Resource Investment Index, Thames River Magnet School ranks #1 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 Thames River 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.