Summary:
Derby, Connecticut is served by a single middle school, Derby Middle School, which enrolls 300 students in grades 6–8 and belongs to the Derby School District. Because it is the only middle school in the city, its results are identical to the district’s middle school data, making any district improvement effort essentially a school-level plan.
Overall, Derby Middle School faces serious academic challenges. The most urgent concern is mathematics: in 2025–2026, math proficiency ranged from just 14.0% in 8th grade to 21.8% in 6th grade, while state averages were above 41%. The previous year, 7th grade math proficiency was only 11.2%, meaning fewer than 1 in 8 students were proficient. English Language Arts is relatively stronger, but still below state levels—average ELA proficiency was 35.2% against the state’s 51.5%. Eighth grade ELA was volatile, dropping from 49.5% in 2024–2025 to 30.0% in 2025–2026. Science proficiency in 8th grade was 26.0%, far below the state’s 50.9%.
Additional factors help explain these results. Chronic absenteeism is 25.0%, well above the state’s 16.4%, and 62.3% of students qualify for free/reduced lunch, indicating a high-poverty student body. The school has a favorable 12.5 student-teacher ratio and spends $16,138 per student, but these resources have not translated into strong outcomes. Derby Middle School has consistently earned a 1-star rating from the state, with its percentile rank slipping from 28 to 25 over three years. The district itself ranks 140 out of 153 Connecticut districts. For parents, the key takeaway is that math instruction and chronic absenteeism are the most pressing areas needing attention, while ELA has shown occasional bright spots but remains inconsistent across grade levels and years.
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