Enrollment
1,737
Connecticut · 2024-25 NCES data
High school (grades 9-12) · Glastonbury, CT
Glastonbury High School
Federal NCES profile for Glastonbury High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 66/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 090162000283
👥 S:T ratio 51
📚 AP courses 100
🌟 Gifted program 30
🎓 Counselors 71
📋 Attendance 77
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Glastonbury High School earns 66/100 on the Resource Investment Index, with class sizes near the Connecticut median. It is also one of the largest schools in Connecticut.
- #1 of 7
- public schools in Glastonbury · Resource Index
- 66
- Resource Index · Higher
- 12.3:1
- students per teacher
- 9.7%
- free-lunch eligible
Glastonbury High School has class sizes near the Connecticut median. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Glastonbury High School ranks #1 of 7 public schools in Glastonbury, CT.
School address
District: Glastonbury School District · Connecticut
NCES ID 090162000283 Verify on NCES CCD record →
Teachers (FTE)
141.0
Federal CCD staff survey
Students per teacher
12.3:1
vs 12.1:1 Connecticut avg
+2% vs state
Free-lunch eligible
9.7%
vs 36.4% Connecticut avg
-73% vs state
Student-teacher ratio in context
How Glastonbury High School compares with Connecticut and U.S. medians
What stands out at Glastonbury High School
Glastonbury High School is a lower-poverty, large high school in Glastonbury, Connecticut, enrolling 1,737 students.
Class loads run somewhat heavier than typical: 12.3:1 puts it in the larger third of Connecticut schools by student-teacher ratio.
Comparatively few students face economic hardship here, 9.7% free-meal eligibility runs 73% below the Connecticut average.
By headcount it is one of the larger campuses in Connecticut, bigger than 99% of state schools at 1,737 students.
Its Resource Investment Index lands in the upper third of 1,003 scored Connecticut schools.
Against 24 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #9.
Its student body is led by White (64%) and Asian (14%) (diversity index 55/100).
On the academic-pipeline side it reports 21 Advanced Placement courses.
Counselor coverage is strong, about 145 students per counselor, inside the American School Counselor Association's recommended 250:1.
Attendance holds up well here: only 9.2% of students were chronically absent, below the typical post-pandemic national figure.
The federal civil-rights collection also records 1 expulsion at this campus for 2021-22.
Glastonbury School District also operates Smith Middle School (875 students) and Gideon Welles School (551 students) alongside Glastonbury 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 Glastonbury High School compares
Glastonbury 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 | 12.3:1 | ▲ 2% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 9.7% | ▼ 73% | 36.4% | 51.7% |
| Enrollment | 1,737 | top 1% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.3:1
Leaner classes than 73% of US schools, among the more generously staffed nationally.
1,737
Bigger than 97% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
9.7%
free-lunch eligible
- 73% below the Connecticut average of 36.4%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
12.3:1
students per teacher
- 2% above state mean
Top 64% in Connecticut - lower ratio than 36% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
9.2%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$23,802
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
Counselors12.0 FTE
Per 145 students, the combined health-and-guidance staffing load for this school.
Discipline context
93
in-school suspensions + 7 out-of-school
Suspension rate: 5.4 per 100 students. Combined in-school and out-of-school rate: 5.8 per 100 students. Reported via the Civil Rights Data Collection. Includes 1 expulsion.
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 64.0%
Asian 13.7%
Hispanic or Latino 12.9%
Two or More 5.9%
African American 3.3%
American Indian / Alaska Native 0.1%
Largest group: White at 64.0% of enrollment.
Student-body diversity index 55.0/100
Simpson diversity index - at 55.0, Glastonbury High School is more mixed than the Connecticut school average of 50.5.
Programs
AP courses offered 21
Funding & spending
District-wide per-pupil expenditure for Glastonbury School District, which includes Glastonbury High School.
$23,802
Per student
0%
vs Connecticut
Avg $23,870
+43%
vs U.S.
Avg $16,593
Revenue mix
Local 76.2%
State 19.2%
Federal 4.6%
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 Glastonbury High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Smith Middle School | Smaller | Similar economic need | Similar S:T ratio |
| Gideon Welles School | Smaller | Similar economic need | Similar S:T ratio |
| Nayaug Elementary School | Smaller | Similar economic need | Similar S:T ratio |
| Buttonball Lane School | Smaller | Similar economic need | Similar S:T ratio |
| Hebron Avenue School | Smaller | Similar economic need | Similar S:T ratio |
Comparisons are relative to Glastonbury High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 875
- Students per teacher
- 11.4:1
- Resource Index
- 55/100
- Enrollment
- 551
- Students per teacher
- 11:1
- Resource Index
- 53/100
- Enrollment
- 533
- Students per teacher
- 13.3:1
- Resource Index
- 52/100
- Enrollment
- 461
- Students per teacher
- 12.8:1
- Resource Index
- 56/100
- Enrollment
- 458
- Students per teacher
- 13.5:1
- Resource Index
- 52/100
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 (~1,737 students)
Next steps
Verify locally before acting on Glastonbury High School's federal record.
- Compare Glastonbury High School against another school. Compare schools
- Glastonbury 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 Glastonbury High School
How many students attend Glastonbury High School?
Glastonbury High School has 1,737 students enrolled. It is a high school in Glastonbury, CT.
What is the student-teacher ratio at Glastonbury High School?
The student-teacher ratio at Glastonbury High School is 12.3:1, which is 2% higher than the Connecticut average of 12.1:1 and 22% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Glastonbury High School?
9.7% of students at Glastonbury High School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of Glastonbury High School?
The largest demographic group at Glastonbury High School is White at 64.0% of enrollment, in Glastonbury, CT. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 55.0/100.
What is the Resource Investment Index for Glastonbury High School?
Glastonbury High School has a Resource Investment Index of 66/100 (higher reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Glastonbury High School rank among public schools in Glastonbury?
By Resource Investment Index, Glastonbury High School ranks #1 of 7 public schools in Glastonbury, 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 Glastonbury on the city page.
Is Glastonbury High School a good school?
Glastonbury High School earns 66/100 on the Resource Investment Index, with class sizes near the Connecticut median. It is also one of the largest schools in Connecticut. 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 Glastonbury School District?
Besides Glastonbury High School, Glastonbury School District also operates Smith Middle School (875 students), Gideon Welles School (551 students), and Nayaug Elementary School (533 students). See the Glastonbury 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.