Summary:
Adeline Montessori School Inc is the single school in the Adeline Montessori School Inc district, an elementary school serving grades PK–8 with 211 students at 995 S Sawyer Rd in Oconomowoc, Wisconsin, and it holds a 3-star rating for 2025–26.
The most striking change is the school's statewide rank: it moved from the 22nd percentile in 2023–24 and the 10th percentile in 2024–25 (both 1 star) to the 56th percentile in 2025–26 (453 out of 1,039 districts, 3 stars). That improvement is driven by English Language Arts, Science, and Social Studies. In 2025–26, 8th grade ELA reached 85.71% proficient (state: 54.38%), while 4th grade Science and Social Studies both hit 88.89% (state: 53.46% and 65.51%). Across the grades tested in both years, ELA rose from 36.8% to 69.0% and Science from 47.4% to 80.2%. Attendance and context measures are also favorable: chronic absenteeism was 11.4% versus the state's 17.3%, free/reduced lunch was 1.42%, and the student-teacher ratio is 11.4.
Math is the clear weak spot. In 2025–26, 3rd grade Math was 0% proficient (state: 54.75%) and 4th grade was 11.11% (state: 52.87%); only 8th grade Math (57.14%) beat the state. Math in grades tested both years slipped slightly, from 27.4% to 25.4%. Two data points deserve caution: with only 211 students, grade-level cohorts are small, so percentages like 88.89% and 85.71% may reflect just a handful of students, making year-to-year swings volatile. Also, the reported 2024–25 dropout rate of 12.1% for this PK–8 school is far above the state's 1.1% and is unusual enough to warrant verification.
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