Schools in Zip Code 53820

ZIP code 53820 is home to three public schools — Potosi Elementary, Potosi Middle, and Potosi High — all part of the Potosi School District, all located at 128 Highway 61 N in the small community of Potosi, and together serving 339 students across grades PK–12. The district as a whole ranks 129 of 432 Wisconsin districts, placing it at the 70th percentile with 4 stars.

Two of the three schools carry that strength. Potosi Elementary is the academic standout: in 2025–2026, 3rd grade math was 95.24% proficient and 5th grade math 95.45%, roughly 40 points above the state, with ELA also well ahead. Its chronic absenteeism is just 5.1%, far below the state's 17.3%, and it ranks 181 of 1,039 (83rd percentile, 4 stars). Potosi High posts a 100.0% graduation rate, 0.0% dropout rate, and 75% proficiency in both ACT ELA and ACT math, ranking 103 of 533 (81st percentile, 4 stars). Its one soft spot is 10th grade social studies at 38.89%, below the state's 48.25%.

Potosi Middle is the relative lag, rated 2 stars and ranking 376 of 643 (42nd percentile), with 8th grade ELA at 33.33% and science at 33.33%, both below state averages, though its 7th grade math (66.67%) beats the state and its absenteeism is the lowest of the three at 3.0%. Notably, high school absenteeism is 17.0%, close to the statewide 17.3% and double the district's 8.6%. Per-student spending rises by level — $16,286, $17,549, and $21,579 — while the high school has the smallest classes at a ratio of 8.9, and free/reduced lunch rises from 24.1% to 35.51%. Because each grade is small, percentages can swing sharply year to year.