Terryville High School

Located at 33 North Harwinton Avenue, in Terryville, Connecticut, Terryville High School is a low-enrollment 9-12 campus that educates 337 students (grades 9 through 12), part of Plymouth School District. Enrollment runs roughly 57% below the state mean of about 788.

Within Plymouth School District, which oversees 4 schools and 1,233 students, Terryville High School is one campus in the system.

In terms of who attends, Terryville High School logs that the largest single group is White, at 72% of enrollment. Other groups include 18% Hispanic, 5% multiracial, 2% Black. The wider county runs roughly 64% White, putting the school's mix noticeably more White than the area baseline.

On the resource side, The school reports having 32 full-time-equivalent teachers, for a student-teacher ratio near 10.7:1. That figure is tighter than the state norm's 12.3:1 average. Around 54% of the student body qualifies for free or reduced-price meals, a number frequently used as a low-income enrollment indicator.

Zooming out to the county, community-level numbers for Naugatuck Valley Planning Region indicate median household income runs about $86,191, roughly 34% of adults have completed at least a four-year degree, and roughly 9% of residents live below the federal poverty line. Across Naugatuck Valley Planning Region's 121 public schools (combined enrollment of about 59,861 students), Terryville High School is one campus in the mix.

The closest other public school is Plymouth Center School, roughly 1.2 miles away. Within five miles, there are 8 other public schools.

Terryville High School operates from a low-density location.

Trend over the last 7 years. Over the past 7-year window, the student count contracted 25%: 447 students in 2018 compared to 337 in 2025. Over the same period, the White share decreased from 87% to 72%. Class-load math has pulled in: from 12.5:1 in 2018 to 10.7:1 in 2025.

On allk12, posts here usually surface around school events, parent volunteer needs, and clubs. Members of the school community can share what they know.