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S
86.2/ 100
Success Index (US)
Top 5%

#21 of 180 high schools in Connecticut
#530 of 16,910 nationally

How is this calculated?
Students
1,737
Enrollment
1,737
Source: NCES CCD
Free/reduced-price lunch
15.8%
Source: NCES CCD
Students per teacher
13.1
Source: NCES CCD

About Glastonbury High School

Glastonbury High School is a public high located in Glastonbury, in the Glastonbury School District school district of Connecticut, United States. It caters for Grades 9–12. In 2025 it enrolled 1,737 students. Traditional public schools run by a school district; free to attend.

Its Success Index (US) is 86.2 out of 100, placing it in the top 5% of high schools in United States and 21st of 180 ranked high schools in Connecticut. Its strongest component is community advantage (fewer free/reduced-price lunch) (95th percentile), and its weakest is students per teacher (65th percentile).

Other published figures: enrollment 1,737.

There are 7 schools in Glastonbury; Glastonbury High School ranks 5th of 7 scored schools there.

Success Index (US) breakdown

Each component is a percentile against high schools across United States.

  • Math proficiency (30%)74%
  • Reading proficiency (30%)83%
  • Community advantage (fewer free/reduced-price lunch) (25%)15.8%
  • Students per teacher (15%)13.1

The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.

Published measures

All figures published for Glastonbury High School by the official sources.

Enrollment
1,737
Students enrolled in the latest NCES directory year.
Free/reduced-price lunch
15.8%
Share of students eligible for free or reduced-price lunch.
Students per teacher
13.1
Enrollment divided by FTE teachers; not class size.
Reading proficiency
83%
Share of tested students proficient or above (all students, all grades).
Math proficiency
74%
Share of tested students proficient or above (all students, all grades).

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Schools near Glastonbury High School

Closest schools by straight-line distance, with their Success Index (US).

Similar schools

Public high schools in Connecticut with a comparable Enrollment.

Frequently asked questions

Is Glastonbury High School a good school?

Glastonbury High School has a Success Index (US) of 86.2 out of 100 (Top 5% of high schools in United States) and ranks #21 of 180 in Connecticut. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.

Where does Glastonbury High School rank in Connecticut?

Glastonbury High School ranks #21 of 180 high schools in Connecticut and #530 of 16,910 nationally on the Success Index (US) (2025 data).

How many students attend Glastonbury High School?

Glastonbury High School had 1,737 students in 2025.

Is Glastonbury High School a elementary school or a high school?

Glastonbury High School is classified as a high covering Grades 9–12. It is a public school.

What other schools are near Glastonbury High School?

There are 10 schools within 15 km of Glastonbury High School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.