- Enrollment
- 469
- Students per teacher
- 12.3:1
- Resource Index
- 22/100
High school (grades 9-12) · Groton, CT
Marine Science Magnet High School
Federal NCES profile for Marine Science Magnet High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 52/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 090345001606
👥 S:T ratio 56
🌟 Gifted program 30
🎓 Counselors 73
📋 Attendance 51
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Marine Science Magnet High School earns 52/100 on the Resource Investment Index, with class sizes near the Connecticut median.
- #1 of 3
- high schools in Groton · Resource Index
- 52
- Resource Index · Higher
- 11:1
- students per teacher
- 27.3%
- free-lunch eligible
Marine Science Magnet High School has class sizes near the Connecticut median. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Marine Science Magnet High School ranks #1 of 3 high schools in Groton, CT.
School address
CCD year-over-year · 2022-23 → 2023-24
+0 students YoY
Marine Science Magnet High School held near 271 students from 2022-23 to 2023-24 (+0 headcount).
Teacher FTE lost 25.4 → 24.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+0 students YoY 090345001606 · Groton, CT High · SMALL · TRAD
274 enr · 11:1 · 27.3% lunch · RII 52
Nearest enrollment peer: Regional Multicultural Magnet School (469 students)
Marine Science Magnet High School held near 271 students from 2022-23 to 2023-24 (+0 headcount). Teacher FTE lost 25.4 → 24.0 across the same CCD years. Read with this school → · District book → · Connecticut schools → · Find another →
Marine Science Magnet High School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Regional Multi
Regional Multicultural Magnet School
469 students
- The Friendship
The Friendship School
460 students
- This school
Marine Science Magnet High School
274 students
- Three Rivers M 92
Three Rivers Middle College Magnet School
92 students
What this shows Marine Science Magnet High School reports 274 students on the CCD universe file.
How Marine Science Magnet High School compares
Marine Science Magnet High 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 | 11:1 | ▼ 9% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 27.3% | ▼ 25% | 36.4% | 51.7% |
| Enrollment | 274 | top 81% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
11:1
Leaner classes than 83% of US schools, among the more generously staffed nationally.
274
Bigger than 29% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
27.3%
free-lunch eligible
- 25% 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
11:1
students per teacher
- 9% below state mean
Top 38% in Connecticut - lower ratio than 62% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
19.7%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Support staff
Counselors2.0 FTE
Per 137 students, the combined health-and-guidance staffing load for this school.
Discipline context
16
in-school suspensions + 9 out-of-school
Suspension rate: 5.8 per 100 students. Combined in-school and out-of-school rate: 9.1 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 61.3%
Hispanic or Latino 19.2%
Two or More 12.5%
Asian 5.5%
African American 1.5%
Largest group: White at 61.3% of enrollment.
Student-body diversity index 56.8/100
Simpson diversity index - at 56.8, Marine Science Magnet High School is more mixed than the Connecticut school average of 50.5.
Programs
AP courses offered 13
How Marine Science Magnet High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Regional Multicultural Magnet School | Larger | Higher economic need | Similar S:T ratio |
| The Friendship School | Larger | Higher economic need | Higher S:T ratio |
| Three Rivers Middle College Magnet School | Smaller | Higher economic need | Higher S:T ratio |
Comparisons are relative to Marine Science Magnet High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 460
- Students per teacher
- 13.5:1
- Resource Index
- 49/100
- Enrollment
- 92
- Students per teacher
- 18.4:1
- Resource Index
- 53/100
Similar high schools in Groton
2 comparable high schools (grades 9-12) serving the same city.
Nationwide high 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 (~274 students)
Similar student-teacher ratio (~11:1)
Frequently asked questions about Marine Science Magnet High School
How many students attend Marine Science Magnet High School?
Marine Science Magnet High School has 274 students enrolled. It is a high school in Groton, CT. CCD year-over-year: 271 (2022-23) → 271 (2023-24), nearly flat (+0).
What is the student-teacher ratio at Marine Science Magnet High School?
The student-teacher ratio at Marine Science Magnet High School is 11:1, which is 9% lower than the Connecticut average of 12.1:1 and 30% 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 Marine Science Magnet High School?
27.3% of students at Marine Science Magnet High School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Marine Science Magnet High School?
The largest demographic group at Marine Science Magnet High School is White at 61.3% of enrollment, in Groton, CT. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 56.8/100.
What is the Resource Investment Index for Marine Science Magnet High School?
Marine Science Magnet High School has a Resource Investment Index of 52/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Marine Science Magnet High School rank among high schools in Groton?
By Resource Investment Index, Marine Science Magnet High School ranks #1 of 3 high 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 high schools in Groton on the city page.
What other schools are in Learn?
Besides Marine Science Magnet High School, Learn also operates Regional Multicultural Magnet School (469 students), The Friendship School (460 students), and Three Rivers Middle College Magnet School (92 students). See the Learn district page for the complete list.