Summary
Theisen Middle is a public middle school in Fond du Lac, WI, serving about 431 students in grades 6–8 as part of the Fond du Lac School District. It ranks 272nd of 643 middle schools in 2025–26 (58th percentile, 3 stars), while the district ranks 226th of 432 in Wisconsin. It was a 4-star, 70th–80th percentile school from 2015–16 through 2018–19, then mostly a 2–3 star school; 2024–25 rebounded to the 69th percentile, but 2025–26 slipped to 58th.
Academically, the school is above district and state in 6th and 7th grade ELA and math, and 8th math is above state, but 8th grade is the clear pressure point: 8th ELA, social studies, and science trail district and/or state. The strongest subgroup result is English Language Learners, ranking 17th of 169 (90th percentile, 5 stars), up from 47th percentile in 2023–24. Special education is steady at 67th percentile, 3 stars, while low-income students rank around 50th percentile. Chronic absenteeism is 16.5%, better than the district (18.2%) and state (17.3%), and much better than Sabish Middle (25.5%) and Woodworth Middle (22.9%).
Compared with nearby high performers, the school has higher poverty and absenteeism: Kewaskum Middle 2.4%, Traeger Middle 7.2%, Campbellsport Middle 8.7%, Laconia Middle School 3.3%, Lomira Middle 6.4%, and Oakfield Middle 1.6%. It spends $15,969 per student and has a favorable 12.7 student-teacher ratio, yet its overall rank remains below most nearby non-FDL schools. A useful same-poverty comparison is South Park Middle: similar free/reduced lunch (44.1% vs 44.6%) and absenteeism (15.4% vs 16.5%), but the school outperforms it in 8th ELA (53.03% vs 43.12%) and 8th math (62.31% vs 40.37%). Dropout rate is low at 0.6%.
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