Summary:
ZIP code 01821 covers Billerica, Massachusetts and contains seven schools — three elementary, two middle, and two high schools — with no alternative schools listed, serving about 5,543 students. Six of these schools belong to the Billerica district, while Shawsheen Valley Vocational Technical High School belongs to the Shawsheen Valley Regional Vocational Technical district. High schools make up 55.9% of enrollment: Billerica Memorial High School has 1,816 students and Shawsheen has 1,282, followed by much smaller middle and elementary schools.
The clearest standout among the elementary schools is John F Kennedy, where 2025–2026 all-grade math proficiency is 57.72% and ELA is 45.90%, both above district and state rates and well ahead of the ZIP's other elementaries. At the middle level, Locke Middle leads in all three subjects (ELA 46.86%, math 45.25%, science 44.57%), though Marshall Middle holds a slightly better rank, suggesting the ranking formula weighs more than headline proficiency. Among high schools, Billerica Memorial is strong in science (10th grade 54.86%) with a 97.4% graduation rate, while Shawsheen posts the highest graduation rate (98.1%), lowest student-teacher ratio (9.8), and highest per-student spending ($24,777 in 2020–2021), but its 10th grade math (31.34%) trails the state badly.
The largest local gaps are elementary ELA at Parker (33.13%) and Thomas Ditson (34.75%), both below the state's 40.03%, plus middle-school science at Marshall (38.63%) and high-school math. Notably, spending and class size do not track neatly with results: Parker has the second-highest spending but the lowest elementary ELA, while John F Kennedy performs best on moderate spending. Keep in mind that free/reduced-lunch data are blank for every school and spending figures are from 2020–2021.
Thank you for your feedback!