Summary:
Union Grove, Wisconsin is served by three public schools — two PK–8 elementary schools and one high school — with no standalone middle school, so middle-grade students are educated inside the elementary buildings. Combined enrollment is 2,383 students: 1,032 at Union Grove High, 886 at Union Grove Elementary, and 465 at Yorkville Elementary. The schools belong to three separate districts: Union Grove Union High School School District, Union Grove J1 School District, and Yorkville J2 School District.
Yorkville Elementary is the clear academic leader, ranking 35th of 432 districts statewide at the 92nd percentile with 5 stars, and improving from the 74th percentile in 2023–24 to the 89th percentile in 2025–26. Every reported 2025–26 test score beat the state average, with math especially strong — several grades scored in the mid-80s while state math averages sit in the low-to-mid 50s. Union Grove Elementary is close behind and remarkably steady, holding a 4-star rating in the low-to-high 70s percentile range across three years, with all 2025–26 tests above state. Union Grove High is a split profile: math and science are above state, social studies is near state, and ELA is below state, but its outcomes are excellent — a 98.3% graduation rate versus 92.0% statewide, a 0.0% dropout rate versus 1.1%, and 7.2% chronic absenteeism versus 17.3% statewide. Its rank also improved from the 34th to the 54th percentile.
Chronic absenteeism is low at all three schools, well under the state rate. Costs differ: Union Grove Elementary spends the least per student at $13,018 and still performs well, while Yorkville ($14,431) and Union Grove High ($14,434) spend nearly the same, though Yorkville has the smallest classes with a 14.4 student-teacher ratio compared with 16.2 at the high school. In short, Yorkville leads academically, Union Grove Elementary is the consistent value performer, and the high school stands out for completion and attendance.
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