The top reported proficiency rate is 79% in Math. The lowest is 64% in English language arts.
Original Research by School Decision on Mary R. Tisko School
Mary R. Tisko School is a small elementary school serving pre-kindergarten through fourth grade in Branford, a coastal Connecticut town about eight miles east of New Haven. The school sits in the walkable Branford Center area, part of a town experiencing active growth tied to bioscience employers, new housing development, and improved commuter rail access.
The school enrolls a small population, with roughly equal class sizes across grade levels. The student body is predominantly white, with a modest Hispanic enrollment and representation from other backgrounds. About one-fifth of students qualify for free or reduced-price lunch, indicating mixed economic circumstances within the enrollment.
Math proficiency data from the most recent state assessments shows strength in third grade, where proficiency was solid. Fourth-grade math results were not published, suggesting those data are withheld for privacy (a common practice when subgroup sizes are very small). In English language arts, third-grade proficiency was respectable, though fourth-grade proficiency was lower, showing a dip in literacy outcomes in the upper elementary grades. Across tested grades, overall proficiency in math was somewhat above the median among districts in the South Central Connecticut Planning Region, placing the school in the top quartile for the region.
The school participates fully in state testing, with near-complete student participation rates, and all students who were tested received regular assessments rather than alternative assessments. The assessment data available represents only one year, so trend information is not yet available.
The district has adopted a new core math curriculum, think! Mathematics, in grades 1 through 4, with the approach now extending to grade 5 for the 2025-2026 school year. This reflects a shift toward more rigorous, problem-solving-based instruction. Teachers have received and will continue receiving professional development as the program rolls out. Parents and families should expect a different math experience and teaching approach from what has been offered in prior years.
Special education and English learner identification rates were not provided in available data, so a parent may want to ask the school directly about these services if relevant to their child's needs.
The town itself offers a strong civic foundation. The Branford Green anchors a walkable downtown with shops, restaurants, and public services nearby. The historic James Blackstone Library serves the community, and Shore Line East commuter rail connects the town to New Haven and beyond. Schools, including Tisko, sit integrated within or near the downtown rather than on isolated campuses, reflecting a town-centered design. Growth is concentrated in transit-oriented housing near the train station and in defined development zones, with new apartment construction and ongoing single-family projects. Housing values are above state averages and have appreciated, placing the area in a moderate-to-higher-cost market, though rents remain somewhat accessible relative to median income.
Families considering Tisko should recognize it as a small, community-embedded school in a walkable, growing town with moderate economic diversity, recent curriculum changes in math, and measurable proficiency that sits above the regional median, though with some softness in upper-elementary literacy outcomes.
See more original research from School Decision →