NCES CCD 2024-25 7 schools CT

Best-Resourced Schools in Groton, CT

Compiled from official source data by .

7 public K-12 schools in Groton from NCES Common Core of Data: enrollment, grade span, demographics, and Civil Rights Data Collection statistics for every active campus.

PlainSchools home → About this data
7
Schools
3,999
Students
44.7/100
Avg Resource Index
11.7:1
Avg Student-Teacher Ratio

National city placement

Middle-of-corpus city profile

According to NCES CCD 2024-25, Groton has more public-school enrollment than 44% of the 4,487 US cities in this directory. Groton sits in the broad middle of the national city distribution rather than at a single obvious extreme. Its scale, average Resource Investment Index, and staffing position need to be read together: a middle placement on one measure does not cancel a stronger or weaker result on another. The percentile panel makes those dimensions explicit, and the school table shows where the city aggregate breaks into materially different campus profiles.

Secondary campuses occupy an unusually large share

3 of the 7 listed Groton schools are classified as high schools, a substantial share of the local portfolio. Advanced-course access, counseling, and graduation-stage staffing therefore have more weight in the city Resource Index average than they do in an elementary-heavy system.

Campus spread matters more than the city mean

The 22-point gap between Thames River Magnet School and Catherine Kolnaski Magnet School shows the range hidden by Groton's average Resource Investment Index. The city figure is useful for national placement, but families ultimately choose among campuses with different grade spans, enrollment, district affiliations, and reported support fields. Start with schools serving the relevant grade level, then compare the index components rather than assuming the city average describes any one classroom.

City enrollment
Top 56%
School count
Top 65%
Resource Index average
69th percentile
Teacher staffing
90th percentile

Robert E. Fitch High School accounts for 23.6% of all Groton public-school enrollment

That concentration means Groton-wide averages can mask substantial variation outside the largest entity. Grade level: High. The share measures enrollment concentration only; it does not establish how districts allocate programs, capital, or staff. Enrollment-weighted aggregates give this entity more weight than any smaller peer, while an unweighted entity average treats every record equally.

Source: NCES Common Core of Data

Groton school enrollment varies 3.4× across entities

Groton school enrollment ranges from 274 students (lowest) to 942 students (highest), a spread of 668 students. That relatively narrow ratio reflects an unusually homogeneous school portfolio for a city this size. Per-school staffing and program breadth can differ sharply at opposite ends of that enrollment range, so the city average should not be treated as a typical campus.

Source: NCES Common Core of Data

Groton student-teacher ratio is 11.7:1 — low (typically associated with smaller schools or per-school staffing investment that often correlates with stronger per-student supports)

student-teacher ratio is the simplest comparative metric but it does not capture the full picture: the ratio counts FTE classroom teachers against total enrollment, push-in specialists, English-language aides, special-education co-teachers, and counselors are not included in most reporting Lower values often correlate with smaller scale and population characteristics rather than higher resource budgets per se.

Source: NCES Common Core of Data, Public School Universe

# School Score
1. Thames River Magnet School 58
2. Marine Science Magnet High School 52
3. Groton Middle School 44
4. Robert E. Fitch High School 43
5. Ella T. Grasso Technical High School 42
6. Charles Barnum Magnet School 38
7. Catherine Kolnaski Magnet School 36

Most racially and ethnically mixed schools in Groton

Ranked by the Simpson student-body diversity index (0-100) from NCES race and ethnicity data, where higher means a more evenly mixed student body. It measures mix, not quality.

  1. 1 Thames River Magnet School 73.5/100
  2. 2 Robert E. Fitch High School 71.9/100
  3. 3 Catherine Kolnaski Magnet School 71.9/100
  4. 4 Groton Middle School 67.6/100
  5. 5 Ella T. Grasso Technical High School 66.5/100

What do families ask about schools in Groton?

Which Groton school has the highest Resource Investment Index? ▼

Thames River Magnet School has the highest Resource Investment Index among the Groton schools in this federal-data comparison at 58/100. The index summarizes reported staffing, counseling, gifted-program, and attendance inputs; it is not an academic rating.

How many schools are in Groton, CT? ▼

Groton has 7 public schools with a total enrollment of 3,999 students. Average student-teacher ratio: 11.7:1.

Other Cities in Connecticut

Bridgeport
44 schools
Hartford
44 schools
New Haven
42 schools
Waterbury
32 schools
Norwalk
23 schools
Stamford
23 schools

Side-by-side: Compare any two schools or districts in Connecticut →

Data from NCES Common Core of Data (CCD) 2024-25 and Civil Rights Data Collection (CRDC) 2021-22. The Resource Investment Index uses reported student-teacher ratio, counselor access, gifted programs, and attendance; it is not an academic rating. Cities must include at least five schools to be listed. This public-data comparison is for informational purposes: verify current enrollment, attendance boundaries, and programs with the school district before acting. See the guide to understanding NCES data.