Enrollment
520
Connecticut · 2024-25 NCES data
Other / mixed grade configuration · Mystic, CT
Mystic River Magnet School
Federal NCES profile for Mystic River Magnet School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
2024-25 NCES dataOther / mixed grade configurationNCES 090177001947
👥 S:T ratio 49
🌟 Gifted program 30
📋 Attendance 47
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mystic River Magnet School earns 42/100 on the Resource Investment Index, with class sizes larger than 71% of Connecticut schools.
- #3 of 3
- public schools in Mystic · Resource Index
- 42
- Resource Index · Typical
- 12.7:1
- large classes for Connecticut
- 35.8%
- free-lunch eligible
Mystic River Magnet School has class sizes larger than 71% of Connecticut schools. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Mystic River Magnet School ranks #3 of 3 public schools in Mystic, CT.
School address
District: Groton School District · Connecticut
NCES ID 090177001947 Verify on NCES CCD record →
Teachers (FTE)
41.0
Federal CCD staff survey
Students per teacher
12.7:1
vs 12.1:1 Connecticut avg
+5% vs state
Free-lunch eligible
35.8%
vs 36.4% Connecticut avg
-2% vs state
Student-teacher ratio in context
How Mystic River Magnet School compares with Connecticut and U.S. medians
What stands out at Mystic River Magnet School
Mystic River Magnet School is a mid-sized combined-grade school in Mystic, Connecticut, enrolling 520 students.
Class loads run somewhat heavier than typical: 12.7:1 puts it in the larger third of Connecticut schools by student-teacher ratio.
Its free-meal eligibility rate of 35.8% lands close to the Connecticut typical range, neither a high- nor low-need campus by this measure.
Enrollment of 520 puts it in the larger third of Connecticut schools by headcount.
Its Resource Investment Index lands in the lower third of 1,003 scored Connecticut schools.
Against 218 statewide peers matched on enrollment and economic need, it ranks mid-pack at #146.
Its student body is led by White (43%) and Hispanic or Latino (31%) (diversity index 70/100).
Attendance runs somewhat below the norm, with 21.3% of students chronically absent per the 2021-22 civil-rights collection.
Groton School District also operates Robert E. Fitch High School (942 students) and Groton Middle School (884 students) alongside Mystic River Magnet School.
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 Mystic River Magnet School compares
Mystic River Magnet School on the metrics families compare, against Connecticut and U.S. means.
| Metric | This school | vs Connecticut | Connecticut avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12.7:1 | ▲ 5% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 35.8% | ▼ 2% | 36.4% | 51.7% |
| Enrollment | 520 | top 30% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.7:1
Leaner classes than 69% of US schools, among the more generously staffed nationally.
520
Bigger than 64% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
35.8%
free-lunch eligible
- 2% 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
12.7:1
students per teacher
- 5% above state mean
Top 71% in Connecticut - lower ratio than 29% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
21.3%
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
$23,574
per pupil, district-wide
- below Connecticut avg of $23,870
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
3
in-school suspensions + 2 out-of-school
Suspension rate: 0.6 per 100 students. Combined in-school and out-of-school rate: 1.0 per 100 students. Reported via the Civil Rights Data Collection.
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 43.1%
Hispanic or Latino 30.8%
Two or More 11.2%
African American 7.3%
Asian 6.7%
American Indian / Alaska Native 0.6%
Native Hawaiian / Pacific Islander 0.4%
Largest group: White at 43.1% of enrollment.
Student-body diversity index 69.7/100
Simpson diversity index - at 69.7, Mystic River Magnet School is more mixed than the Connecticut school average of 50.5.
Programs
Funding & spending
District-wide per-pupil expenditure for Groton School District, which includes Mystic River Magnet School.
$23,574
Per student
-1%
vs Connecticut
Avg $23,870
+42%
vs U.S.
Avg $16,593
Revenue mix
Local 48.5%
State 45.0%
Federal 6.5%
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 Mystic 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 |
| Thames 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 Mystic River Magnet School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 942
- Students per teacher
- 9.9:1
- Resource Index
- 43/100
- Enrollment
- 884
- Students per teacher
- 11.5:1
- Resource Index
- 44/100
- Enrollment
- 501
- Students per teacher
- 11.7:1
- Resource Index
- 58/100
- Enrollment
- 392
- Students per teacher
- 12.6:1
- Resource Index
- 46/100
- Enrollment
- 375
- Students per teacher
- 11.7:1
- Resource Index
- 36/100
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of Connecticut, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~520 students)
Next steps
Verify locally before acting on Mystic River Magnet School's federal record.
- Compare Mystic River Magnet School against another school. Compare schools
- Groton School District'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 Mystic River Magnet School
How many students attend Mystic River Magnet School?
Mystic River Magnet School has 520 students enrolled. It is a public school in Mystic, CT.
What is the student-teacher ratio at Mystic River Magnet School?
The student-teacher ratio at Mystic River Magnet School is 12.7:1, which is 5% higher than the Connecticut average of 12.1:1 and 19% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Mystic River Magnet School?
35.8% of students at Mystic River Magnet School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Mystic River Magnet School?
The largest demographic group at Mystic River Magnet School is White at 43.1% of enrollment, in Mystic, CT. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 69.7/100.
What is the Resource Investment Index for Mystic River Magnet School?
Mystic River Magnet School has a Resource Investment Index of 42/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Mystic River Magnet School rank among public schools in Mystic?
By Resource Investment Index, Mystic River Magnet School ranks #3 of 3 public schools in Mystic, 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 Mystic on the city page.
Is Mystic River Magnet School a good school?
Mystic River Magnet School earns 42/100 on the Resource Investment Index, with class sizes larger than 71% of Connecticut schools. 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 Groton School District?
Besides Mystic River Magnet School, Groton School District also operates Robert E. Fitch High School (942 students), Groton Middle School (884 students), and Thames River Magnet School (501 students). See the Groton School District 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.