Enrollment
307
High
DISTRICT 254 · STATE 788
SCHOOL COMMUNITY·THOMASTON SCHOOL DISTRICT·NCES 090450000908
Thomaston High School
185 Branch Rd., Thomaston, CT 06787 · (860) 283-3030 · Naugatuck Valley Planning Region
GRADES 07–12HIGH21-SUBURBREGULAR SCHOOL307 STUDENTS
·
allk12 Grade
Not graded
This school has no state test results for 2023-24 or 2024-25 to grade, which is common for schools that end before third grade. How grades work
Student : Teacher
10.7:1
29 FTE teachers
DISTRICT 11.9:1 · STATE 12.3:1
Free / Reduced Lunch
36%
110 students
DISTRICT 40% · STATE 44%
Community
0
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 7 | 60 | 20% |
| Grade 8 | 65 | 21% |
| Grade 9 | 57 | 19% |
| Grade 10 | 45 | 15% |
| Grade 11 | 38 | 12% |
| Grade 12 | 42 | 14% |
Student demographics
30%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 34% · STATE 67% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
School pathway
Feeds from
Based on grade levels within Thomaston School District. Attendance zones can vary; confirm enrollment with the district.
Test scores
CT Smarter Balanced 2024-25 . % Met or Exceeded StandardEnglish Language Arts
53.4%
CT avg 50.5%
Math
54.2%
CT avg 45.9%
What this means: On the CT Smarter Balanced, Connecticut's statewide test, about 53 of every 100 students at this school read and write at grade level and about 54 of 100 do math at grade level. Across all Connecticut schools, those numbers are about 51 and 46.
Source: CT Smarter Balanced. All students, all grades. See all years and grades →
Schools most like Thomaston High School
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Thomaston High School this school | 307 | 35.8% | N/A |
| Stafford High School Stafford Springs | 357 | 39.2% | N/A |
| Housatonic Valley Regional High School Falls Village | 352 | 29.8% | N/A |
| Nathan Hale-Ray High School Moodus | 262 | 29.4% | N/A |
| Portland High School Portland | 323 | 31.6% | N/A |
| Lyman Memorial High School Lebanon | 322 | 28.0% | N/A |
Matched among Connecticut high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Thomaston High School ranks
Among high schools| Measure | This school | In Connecticut | In Naugatuck Valley Planning Region |
|---|---|---|---|
| Math proficiency ranked highest first | 54.2% | #3 of 18 | N/A |
| Reading proficiency ranked highest first | 53.4% | #5 of 19 | N/A |
| Enrollment ranked largest first | 307 | #174 of 201 | #23 of 24 |
| Students per teacher ranked fewest first | 10.7:1 | #61 of 188 | #8 of 24 |
| Diversity index ranked most diverse first | 30.2% | #170 of 188 | #24 of 24 |
| Free and reduced lunch ranked highest share first | 35.8% | #114 of 196 | #18 of 24 |
| Enrollment change since 2017-18 ranked steepest decline first | -22.3% | #23 of 120 | #2 of 14 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
307
-37 (-11%) vs 2020
+28% since 1990-91, when it was 240
Student : Teacher
10.7:1
was 12.3:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 307 | 28.6 | 10.7:1 | 36% (110) |
| 2023-24 | 295 | 29.6 | 10.0:1 | 36% (107) |
| 2022-23 | 317 | 33.6 | 9.4:1 | 33% (104) |
| 2020-21 | 344 | 28 | 12.3:1 | 33% (112) |
| 2017-18 | 395 | 33.6 | 11.8:1 | 20% (78) |
| 2015-16 | 410 | 33 | 12.4:1 | 20% (83) |
| 2010-11 | 522 | 43 | 12.1:1 | 16% (86) |
| 2000-01 | 559 | 40 | 14.0:1 | N/A |
| 1990-91 | 240 | 23 | 10.4:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Thomaston High School.
Since 2017-18: students down 22% (395 to 307); teachers down 15% (33.6 to 28.6).
About Thomaston High School
Thomaston High School is a high school in Thomaston, Connecticut, and it is part of Thomaston School District. It educates 307 students in grades 7 through 12. The school's enrollment is 61% smaller than the 788 average for high schools in Connecticut.
Thomaston High School sits within Thomaston School District, which has 3 schools and 762 students.
White students make up 83% of enrollment at Thomaston High School. Other students are 11% Hispanic and 3% multiracial. That is higher than the 64% White share among all Naugatuck Valley Planning Region residents. Pick two students at random and there is a 30% chance they belong to different racial or ethnic groups; that figure is the school's diversity index.
Its 28.6 full-time-equivalent teachers give the school a ratio of 10.7:1. The school has fewer students per teacher than the 12.3:1 average for high schools in Connecticut. The school's lunch program data list 36% of students as eligible for free or reduced-price meals. That is lower than the 52% average for public schools in Naugatuck Valley Planning Region.
Census estimates describe Naugatuck Valley Planning Region this way: the median household income is $86,191, a bachelor's degree or higher is held by about 34% of adults, and the share of residents below the poverty line is 9%. In all, Naugatuck Valley Planning Region has 121 public schools and roughly 59,861 students.
Nearby, Black Rock School is about 0.2 miles away. Within five miles of Thomaston High School, there are at least 8 other public schools.
By NCES locale, the school is Suburb: Large, or in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Thomaston High School's enrollment declined from 344 in 2020-21 to 307 in 2024-25. Over the same period, the student-to-teacher ratio fell to 10.7:1, from 12.3:1.
Families, students, and staff can use this page to discuss school safety, transportation, and start times at Thomaston High School. Alumni can share how the school prepared them.
Naugatuck Valley Planning Region at a glance
View full county profilePopulation
454,969
Census ACS
Median income
$86,191
Household, ACS
Bachelor's+
34%
Adults 25+
Poverty rate
9%
Below federal line
Schools in county
121
59,861 students
Quick facts
Related schools
Other schools in Thomaston School District
- Black Rock SchoolElementary · 259 students
- Thomaston Center SchoolMiddle · 196 students
Other schools in Thomaston
- Black Rock SchoolElementary · 259 students
- Thomaston Center SchoolMiddle · 196 students
Nearby schools
- Black Rock School0.2 mi · 259
- Thomaston Center School1.5 mi · 196
- Plymouth Center School2.6 mi · 320
- John Trumbull Primary School3.6 mi · 610
- Terryville High School3.8 mi · 337
- Polk School4.1 mi · 303
Frequently asked questions
About Thomaston High SchoolHow many students attend Thomaston High School?
Thomaston High School enrolls approximately 307 students in grades 07-12.
Is Thomaston High School an elementary, middle, or high school?
Thomaston High School is a high school covering grades 07-12.
How many teachers does Thomaston High School have?
Thomaston High School employs 29 FTE teachers, for a student-to-teacher ratio of 10.7:1.
What is the student diversity at Thomaston High School?
Student demographics at Thomaston High School are roughly 83% White, 11% Hispanic, 2% Black, 1% Asian, 3% Two or more.
What district is Thomaston High School in?
Thomaston High School is part of Thomaston School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.