Summary:
Charlestown, Massachusetts, has four schools serving grades PK–12—two elementary schools, one high school, and one alternative school—all within the Boston district, where middle grades are covered by the K–8, 7–12 high, and PK–12 alternative schools.
For parents comparing options, the data shows big differences. Warren-Prescott K-8 School is the strongest overall performer: its 2025–2026 all-grade proficiency rates are 66.91% in ELA, 59.85% in math, and 43.37% in science, well above district and state averages, and its rank history is consistently high with 4 stars. Harvard-Kent Elementary School is the strongest improver, rising to 61st percentile and 3 stars, with 44.44% ELA, 54.86% math, and 42.86% science; its 3rd grade math is 82.05%. Horace Mann School for the Deaf Hard of Hearing is a small PK–12 alternative school with 73 students, very low test scores, a 60.0% graduation rate, but a 0.0% dropout rate. Charlestown High School is the largest school and consistently ranks near the bottom, with 3.45% ELA, 13.33% math, and 10.34% science, a 74.5% graduation rate, and a 10.8% dropout rate.
Across these schools, grade-level results can swing sharply: for example, Harvard-Kent Elementary School's 3rd grade math is 82.05% but 6th grade math is 38.89%, and Warren-Prescott K-8 School's 4th grade ELA is 78.57% while 7th grade math is 20%. Civics is a bright spot at Warren-Prescott K-8 School (65% in 8th grade). Spending and staffing do not track simply with outcomes: Horace Mann School for the Deaf Hard of Hearing spends $123,300 per student with a 1.9 student-teacher ratio, while Warren-Prescott K-8 School has the highest ratio among non-alternative schools (11.1) but strongest outcomes. Free/reduced lunch data is blank for all four schools, and grade spans differ widely, so comparisons should be made cautiously.
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