Summary:
ZIP code 53594 covers Waterloo, Wisconsin, served by the Waterloo School District, and includes three public schools — Waterloo Elementary (PK–4), Waterloo Middle (5–8), and Waterloo High (9–12) — with a combined enrollment of 631 students and no alternative schools in the area. Elementary students make up 44.5% of enrollment, high school 36.8%, and middle school 18.7%.
The three schools differ in notable ways. Waterloo Elementary has the strongest attendance, with chronic absenteeism of 10.4% — well below the state's 17.3% — and the smallest student-teacher ratio at 11.4. Waterloo Middle has been the steadiest, holding 2 stars for three straight years and posting a 0.0% dropout rate. Waterloo High shows the biggest swing: it improved from 1 star and the 15th percentile in 2024–25 to 2 stars and the 40th percentile in 2025–26, with a 93.2% graduation rate and 0.8% dropout rate, both better than the state. Its absenteeism (15.7%) is the highest of the three, however. The Waterloo School District overall is rated 1 star, 19th percentile, 348th of 432 districts.
Academically, results are mixed. Mathematics is the clearest weakness: middle school math fell below the state in every tested grade in 2025–26, with 7th grade at 32.08 versus the state's 55.67, and high school ACT math at 33.87 versus 42.93. ELA is also weak in several middle and high school grades. Social studies is the relative bright spot, landing above state averages in Elementary 4th grade, Middle 8th grade, and High 10th grade. Elementary 4th-grade results were above state in ELA, math, social studies, and science in 2024–25, though its 2025–26 tested grades fell below state averages — a reminder that year-to-year results can shift.
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