The top reported proficiency rate is 38% in English language arts. The lowest is 35% in Math.
Original Research by School Decision on Black Rock School
Black Rock School serves prekindergarten through third grade in Thomaston, a small mill town in southeastern Connecticut whose compact downtown sits a short walk from the school's campus on Branch Road. The school enrolls a small cross-section of the town's population, with a mix of white families, Hispanic families, and smaller numbers of Asian and other students. About a third of students qualify for free or reduced-price lunch, placing the student body somewhere near the town's economic middle.
The school's most recent test results show proficiency below what the field would typically call strong. Across all tested grades, about half the enrollment met proficiency in math and about two-thirds in English language arts on the Smarter Balanced Assessment. Third graders alone—the only grade fully tested by state standards—scored lower, with about a third meeting proficiency in math and about two-fifths in reading. A parent may want to look into what support structures exist for students who have not yet reached proficiency and what trajectory the school expects for younger grades as they advance.
Relative to other districts in the Naugatuck Valley Planning Region, Black Rock School sits in the bottom quartile for overall proficiency. This is a straightforward fact about where the school stands regionally; it describes position rather than value. The school's third-grade test participation was complete, suggesting reliable data collection.
Thomaston is a town in steady equilibrium rather than growth. The population is nearly flat, residential neighborhoods feature older homes rather than new subdivisions, and walkable downtown blocks retain their historic brick fabric around Main Street. The town's civic anchors—library, Opera House, public parks—cluster downtown while the school campus sits slightly apart on Branch Road, reachable by heading west from the retail core. Housing values in the zip code sit somewhat below the state benchmark, and mortgage costs work out to roughly moderate affordability for a state family. The town has adopted a new plan of conservation and development and is explicitly anticipating an aging population and a shift toward varied housing options.
The school sits in the middle of a significant planning moment for the district. In 2025, the Thomaston School District launched a Strategic Feasibility and Utilization Study examining whether to consolidate or reconfigure its three schools, reduce the number of facilities, expand shared services with neighboring districts, or pursue full regionalization. The district faces a facilities master plan calling for substantial repair investment across its buildings and is modeling enrollment declines over the next several years. The study's outcome could reshape which schools exist, how grades are grouped, and the long-term tax load on property owners. This is not a crisis but a live transition, and a family considering the school should factor in that the grade structure or building itself could change within the next few years.
The district has also completed a town-wide property revaluation as of October 2025, resetting every property's assessed value and the tax base for the next several years. Because school costs drive the bulk of local property taxes, this revaluation directly touches what a family would owe after moving in. Finally, the district adopted a curriculum alignment policy requiring all PreK-12 English Language Arts instruction to connect explicitly to the district's Portrait of a Graduate competencies, a shift that frames how the school thinks about learning outcomes across grades.
Black Rock School is a traditional public school in a stable, older small town with a modest economic middle class, where the walkable center is intact and civic life remains local. Its academic performance is below regional benchmarks, the district is in active transition, and a parent stepping in should understand both the current testing picture and the planning work underway.
See more original research from School Decision →