Summary:
ZIP code 53191 is home to a single high school: Williams Bay High, a grades 9–12 school with 170 students at 500 W Geneva St in Williams Bay, Wisconsin, part of the Williams Bay School District. Because it is the only high school in this area, the most useful way to judge it is by its own trend over time and by how it compares with its district and with Wisconsin averages.
Williams Bay High has improved markedly in recent years. In 2023–2024 it ranked 279th of 431 schools — the 35th percentile with 2 stars — while by 2025–2026 it ranked 136th of 533, the 74th percentile with 4 stars, moving from the bottom third to the top quarter of Wisconsin high schools. Outcomes are strong: a 100.0% graduation rate in 2024–2025, above the state's 92.0%; a 0.5% dropout rate, below the state's 1.1%; and chronic absenteeism of 10.2%, well under the state's 17.3%. Reading and social studies are clear strengths, with 2025–2026 English Language Arts proficiency at 67.5% versus 48.47% statewide and social studies at 68.57% versus 48.25% statewide.
Mathematics is steady but not a standout: 42.5% in 2025–2026 versus 42.93% statewide, and 40.91% versus 42.73% the year before. Science is the most volatile subject — 52.27% in 2024–2025, above the state's 43.42%, then 40.00% in 2025–2026, below the state's 43.2%. With only 170 students, a swing that size may reflect just a few students, so a single year's science result deserves caution. For context, the school spends $20,097 per student, has a 12.4:1 student-teacher ratio, and 31.76% of students qualify for free or reduced lunch.
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