Summary:
The Union Grove Union High School School District in Union Grove, Wisconsin, is a single-school district consisting of Union Grove High, a high school serving grades 9–12 with 1,032 students. Because there is only one school, there are no within-district comparisons to make, and district figures and school figures describe the same campus. The district is ranked 222 of 432 in Wisconsin, at the 49th percentile with 2 stars, while the school's own most recent ranking history places it at the 54th percentile with 3 stars.
Union Grove High's strongest results come in completion and attendance. Its graduation rate is 98.3%, well above the statewide 92.0%, and its dropout rate is 0.0%, compared with 1.1% statewide. Chronic absenteeism is 7.2%, less than half the state's 17.3%, which points to strong student engagement and completion supports. Academically, Mathematics is the clearest bright spot: 10th-grade ACT proficiency was 49.21% in 2025-2026 versus 42.93% statewide, and the school outperformed the state in math in both reported years. Science was also modestly above the state, at 43.65% versus 43.20%.
English Language Arts is the biggest area to watch. ELA proficiency was 43.65% in 2025-2026 compared with 48.47% statewide, and the gap widened from -1.74 points the year before. Social Studies, essentially level with the state in 2024-2025, slipped to 46.72% against the state's 48.25%. Parents should also weigh context: a free/reduced lunch rate of 11.72%, per-student spending of $14,434, and a student-teacher ratio of 16.2. The ranking trend has been generally positive — from 2 stars and the 34th percentile in 2023-2024 to 3 stars in the two most recent years — but the test data covers 10th grade only, so it reflects that grade level rather than the entire student body.
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