Middle Schools in South Lyon Community Schools

The two middle schools serving the South Lyon Community Schools district in Michigan—Millennium Middle School and Centennial Middle School—educate roughly 1,900 students in grades 6-8 within an affluent suburban area where the district itself holds a 4-star rating and ranks in the 88th percentile statewide.

Both schools are strong performers, but Millennium Middle School is the current academic leader. It holds a 5-star rating and a 90th percentile state rank, while Centennial Middle School sits at 4 stars and the 93rd spot. Millennium outperforms Centennial in nearly every subject and grade level on M-Step and PSAT exams, with standout results like 80.6% proficiency in 8th-grade PSAT English Language Arts. Notably, Millennium achieves these higher scores while spending $2,715 less per student ($12,445 vs. $15,160) and maintaining a slightly larger class size, suggesting greater cost efficiency. However, Centennial is gaining momentum—its state ranking has improved by 34 places over two years (from 127th to 93rd), while Millennium’s ranking has fluctuated between 65th and 89th, hinting the gap may be closing.

Both schools share district-wide strengths in English Language Arts and Social Studies, with proficiency rates often 15-20 points above state averages. Chronic absenteeism is low (16-17% vs. 27.9% statewide), and free/reduced lunch eligibility is modest (15-18%). The clearest challenge is 8th-grade PSAT Math: while both schools far exceed the state average (33.2%), their proficiency rates (57.4% at Millennium, 56.6% at Centennial) lag significantly behind their own ELA scores, indicating room to strengthen college-readiness in mathematics. Additionally, Centennial’s 8th-grade Science score dipped to 44.2% in 2024-2025—below the state average and 18.5 points behind Millennium—before rebounding to 49.5% the next year, a historical outlier worth monitoring.