Summary:
ZIP code 53103 is served by just one public school — Big Bend Elementary, an elementary school covering grades PK–6 with 455 students, part of the Mukwonago School District.
Big Bend Elementary stands out well beyond its ZIP code. It ranks 31st of 1,039 Wisconsin schools in 2025–2026 — the 97th percentile with 5 stars — after climbing from 72nd in 2023–2024 and 37th in 2024–2025. The Mukwonago School District itself ranks 30th of 432 districts, in the 93rd percentile with 5 stars. Proficiency beats both district and state in nearly every tested area. Math is the strongest subject: the school's 2025–2026 math average was 84.42%, above the district's 82.39% and far above the state's 53.26%, up from 78.34% the year before. Fourth grade math was the highest score in the dataset at 91.55% proficient — 9.95 points above the district and 38.68 points above the state. English Language Arts averaged 80.55%, about 3.24 points above the district and 26.92 above the state, with grade 5 ELA at 87.93%. Fourth grade science held steady at 84.51%, roughly 31 points above the state, and social studies was 87.32%, 2.96 points above the district. The clearest relative weak spot is 6th grade: ELA at 70.67% and math at 73.33%, both below district averages while still comfortably above state averages.
Attendance is exceptional, with chronic absenteeism of 1.6% compared with 3.8% in the district and 17.3% statewide. Free/reduced lunch is 11.87%, per-student spending is $13,508, and the student-teacher ratio is 13.7:1.
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