Summary:
Zip code 06415, covering the Colchester area of Connecticut, contains one public middle school — William J. Johnston Middle School — serving grades 6 through 8 with 452 students in the Colchester School District.
Since William J. Johnston Middle School is the only middle school in this zip code, there are no local schools to compare it against, but it stands out strongly when measured against state averages. The school has earned a 4-star rating from SchoolDigger for three consecutive years and ranks in the top quartile of Connecticut middle schools, though its percentile has slipped slightly from 79th to 74th over that period. Mathematics is the school's clearest strength, with proficiency rates roughly 20 percentage points above the state average in every grade level — 7th grade math reached 65.8% proficiency in 2025–2026. Science performance is also exceptional, with 67.9% of 8th graders proficient versus 50.3% statewide. English language arts results are solid as well, with proficiency rising from 54.8% in 6th grade to 66.4% in 8th grade, and 6th grade ELA improved by nearly 7 percentage points year over year.
Beyond test scores, the school benefits from a healthy learning environment. Chronic absenteeism sits at 12.9%, below both the district rate of 14.4% and the state rate of 16.4%. The student-teacher ratio is a favorable 10.5 to 1, which supports individualized instruction. About 1 in 5 students qualifies for free or reduced-price lunch, and per-student spending was approximately $17,467 in 2018–2019, though more recent spending figures are not available. While the Colchester School District ranks near the middle of Connecticut districts, William J. Johnston Middle School performs well above the district and state averages, making it a clear academic asset for families in the 06415 area.
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