Summary:
Zip code 48647 is home to the Mio-AuSable Schools district in Mio, Michigan, which serves approximately 497 students across two schools: MioAuSable Elementary School (grades PK-5) and MioAuSable High School (grades 6-12).
For parents, the most encouraging news is that MioAuSable High School is showing clear signs of improvement, climbing from the 22nd to the 38th percentile in state rankings over the past three years. It also boasts a strong 90.6% graduation rate—well above the state average of 84%—and a dropout rate of just 3.1%. The high school's standout subject is 11th-grade science, where 39.3% of students are proficient, actually beating the state average. In contrast, MioAuSable Elementary School has remained stable in the low-to-mid 20th percentile, with its best performance in 3rd-grade English Language Arts (32.5% proficient vs. 38.2% statewide). However, the elementary school struggles significantly in 5th-grade math, where only 8.33% of students are proficient compared to the state's 32.2%.
The most striking finding is a dramatic "middle school slump." While 3rd-grade reading is near the state average, by 6th grade ELA proficiency crashes to just 7.89% (state: 37.5%). This suggests a breakdown in academic support during the transition to the upper grades. Chronic absenteeism is a district-wide crisis at 35.8% (state: 27.9%), affecting both buildings nearly equally, and this likely explains much of the low performance. Despite spending over $15,000 per pupil—above the state average—and maintaining favorable student-teacher ratios around 14:1, outcomes remain below par. The district's high poverty rate (over 55% qualifying for free lunch) and attendance issues appear to be the biggest hurdles. Still, the high school's upward trajectory offers hope that recent changes are beginning to take root.
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