Enrollment
684
Connecticut · 2024-25 NCES data
High school (grades 9-12) · Groton, CT
Ella T. Grasso Technical High School
Federal NCES profile for Ella T. Grasso Technical High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 36/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 090000201139
👥 S:T ratio 43
📚 AP courses 10
🌟 Gifted program 30
🎓 Counselors 54
📋 Attendance 42
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ella T. Grasso Technical High School earns 36/100 on the Resource Investment Index, with class sizes larger than 87% of Connecticut schools.
- #3 of 3
- high schools in Groton · Resource Index
- 36
- Resource Index · Typical
- 14.3:1
- large classes for Connecticut
- 42.4%
- free-lunch eligible
Ella T. Grasso Technical High School has class sizes larger than 87% of Connecticut schools. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Ella T. Grasso Technical High School ranks #3 of 3 high schools in Groton, CT.
School address
NCES ID 090000201139 Verify on NCES CCD record →
Teachers (FTE)
48.0
Federal CCD staff survey
Students per teacher
14.3:1
vs 12.1:1 Connecticut avg
+18% vs state
Free-lunch eligible
42.4%
vs 36.4% Connecticut avg
+16% vs state
Student-teacher ratio in context
How Ella T. Grasso Technical High School compares with Connecticut and U.S. medians
What stands out at Ella T. Grasso Technical High School
Ella T. Grasso Technical High School is a mid-sized high school in Groton, Connecticut, enrolling 684 students.
Class loads run heavy: 14.3:1 is larger than about 87% of Connecticut schools and 18% above the 12.1:1 state mean, so each teacher carries more students than is typical.
Economic need runs somewhat above the state's typical profile, with 42.4% of students eligible for free meals.
Enrollment of 684 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 146 statewide peers matched on enrollment and economic need, it ranks mid-pack at #81.
Its student body is led by Hispanic or Latino (42%) and White (37%) (diversity index 67/100).
No Advanced Placement courses are reported for this campus in the federal data.
Counselor coverage is strong, about 228 students per counselor, inside the American School Counselor Association's recommended 250:1.
Attendance runs somewhat below the norm, with 23.1% of students chronically absent per the 2021-22 civil-rights collection.
The surrounding Connecticut Technical Education and Career System spends $489 per pupil, 98% below the Connecticut average, a leaner-resourced district than most.
Discipline events run high: 139 in- and out-of-school suspensions were reported for 684 students in the 2021-22 Civil Rights Data Collection.
Among Groton's high schools, it stands alongside Robert E. Fitch High School (942 students): Ella T. Grasso Technical High School is smaller than that campus by headcount and runs heavier classes (14.3:1 vs 9.9:1).
Connecticut Technical Education and Career System also operates W. F. Kaynor Technical High School (831 students) and Bullard-Havens Technical High School (819 students) alongside Ella T. Grasso Technical High 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 Ella T. Grasso Technical High School compares
Ella T. Grasso Technical High 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 | 14.3:1 | ▲ 18% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 42.4% | ▲ 16% | 36.4% | 51.7% |
| Enrollment | 684 | top 17% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.3:1
Leaner classes than 54% of US schools, a middle-of-the-pack class size.
684
Bigger than 79% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
42.4%
free-lunch eligible
- 16% 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
14.3:1
students per teacher
- 18% above state mean
Top 87% in Connecticut - lower ratio than 13% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
23.1%
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
$489
per pupil, district-wide
- below Connecticut avg of $23,870
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors3.0 FTE
Per 228 students, the combined health-and-guidance staffing load for this school.
Discipline context
103
in-school suspensions + 36 out-of-school
Suspension rate: 15.1 per 100 students. Combined in-school and out-of-school rate: 20.3 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
Hispanic or Latino 42.1%
White 37.4%
Two or More 10.8%
African American 7.7%
American Indian / Alaska Native 1.0%
Asian 0.9%
Native Hawaiian / Pacific Islander 0.1%
Largest group: Hispanic or Latino at 42.1% of enrollment.
Student-body diversity index 66.5/100
Simpson diversity index - at 66.5, Ella T. Grasso Technical High School is more mixed than the Connecticut school average of 50.5.
Programs
AP program Not offered
Funding & spending
District-wide per-pupil expenditure for Connecticut Technical Education and Career System, which includes Ella T. Grasso Technical High School.
$489
Per student
-98%
vs Connecticut
Avg $23,870
-97%
vs U.S.
Avg $16,593
Revenue mix
Local 1.6%
State 86.4%
Federal 12.0%
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 Ella T. Grasso Technical High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| W. F. Kaynor Technical High School | Similar size | Similar economic need | Similar S:T ratio |
| Bullard-Havens Technical High School | Similar size | Higher economic need | Lower S:T ratio |
| H. C. Wilcox Technical High School | Similar size | Similar economic need | Lower S:T ratio |
| Platt Technical High School | Similar size | Similar economic need | Lower S:T ratio |
| A. I. Prince Technical High School | Similar size | Higher economic need | Lower S:T ratio |
Comparisons are relative to Ella T. Grasso Technical High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 831
- Students per teacher
- 13.2:1
- Resource Index
- 40/100
- Enrollment
- 819
- Students per teacher
- 11.7:1
- Resource Index
- 41/100
- Enrollment
- 753
- Students per teacher
- 11.8:1
- Resource Index
- 42/100
- Enrollment
- 749
- Students per teacher
- 12.3:1
- Resource Index
- 38/100
- Enrollment
- 725
- Students per teacher
- 9.9:1
- Resource Index
- 40/100
Similar high schools in Groton
2 comparable high schools (grades 9-12) serving the same city.
Similar high 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 (~684 students)
Similar student-teacher ratio (~14.3:1)
Next steps
Verify locally before acting on Ella T. Grasso Technical High School's federal record.
- Compare Ella T. Grasso Technical High School against another school. Compare schools
- Connecticut Technical Education and Career System'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 Ella T. Grasso Technical High School
How many students attend Ella T. Grasso Technical High School?
Ella T. Grasso Technical High School has 684 students enrolled. It is a high school in Groton, CT.
What is the student-teacher ratio at Ella T. Grasso Technical High School?
The student-teacher ratio at Ella T. Grasso Technical High School is 14.3:1, which is 18% higher than the Connecticut average of 12.1:1 and 9% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Ella T. Grasso Technical High School?
42.4% of students at Ella T. Grasso Technical High School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Ella T. Grasso Technical High School?
The largest demographic group at Ella T. Grasso Technical High School is Hispanic or Latino at 42.1% of enrollment, in Groton, CT. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 66.5/100.
What is the Resource Investment Index for Ella T. Grasso Technical High School?
Ella T. Grasso Technical High School has a Resource Investment Index of 36/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Ella T. Grasso Technical High School rank among high schools in Groton?
By Resource Investment Index, Ella T. Grasso Technical High School ranks #3 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.
Is Ella T. Grasso Technical High School a good school?
Ella T. Grasso Technical High School earns 36/100 on the Resource Investment Index, with class sizes larger than 87% 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 Connecticut Technical Education and Career System?
Besides Ella T. Grasso Technical High School, Connecticut Technical Education and Career System also operates W. F. Kaynor Technical High School (831 students), Bullard-Havens Technical High School (819 students), and H. C. Wilcox Technical High School (753 students). See the Connecticut Technical Education and Career System district page for the complete list.
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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.