Summary:
ZIP code 53022 is home to three elementary schools — County Line Elementary, MacArthur Elementary, and Rockfield Elementary — all serving PK–5 students in the Germantown area and all part of the Germantown School District, which ranks 54 of 432 districts in Wisconsin (88th percentile, 4 stars). Together the three schools enroll 1,326 students, with County Line at 496, MacArthur at 486, and Rockfield at 344.
County Line is the academic standout. It ranks 66 of 1,039 schools statewide (94th percentile, 5 stars) in 2025–2026 — up from 127 two years earlier — and posts the highest average proficiency in the group at 79.61%, with standout results like 92.05% in 4th Grade Social Studies and 91.18% in 5th Grade ELA. MacArthur is the improving school, climbing from 241 to 129 in the statewide rankings over two years (77th to 88th percentile) while serving the highest free/reduced lunch rate of the three at 22.02%; its 2025–2026 average proficiency was 72.60%. Rockfield, the smallest school, has the most favorable resources — $12,907 per student and a 13.9 student-teacher ratio — but the lowest average proficiency at 67.20% and a declining rank, falling from 144 to 293 over two years. Its bright spots are in 5th grade, including 83.64% in ELA.
Attendance is a strength across the area: chronic absenteeism is 2.3% at County Line, 3.3% at Rockfield, and 7.4% at MacArthur, all far below the state's 17.3%. Grade-level results swing notably year to year, and because each grade is a different group of students, those changes should not be read as the same children improving or declining. County Line and MacArthur scored above state averages in every reported test, while Rockfield fell below the state in 4th Grade ELA and 4th Grade Science in 2025–2026.
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