Week 15
2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2021 | 2022 | 2023 | 2024 | 2025
All | ACC | Big 10 | Big 12 | Big East | Conference USA | Division I-A Independents | Mid-American Conference | MWC | Pac-12 | SEC | Sun Belt Conference | WAC
| Place | Team | Rating | Strength of Schedule | +/- | 
|---|---|---|---|---|
| 1. Ohio State (11 - 2) Schedule: 4.959 (5) | 7.535 7.535  | |||
| 2. Penn State (9 - 4) Schedule: 4.801 (7) | 6.26 6.26  1 | |||
| 3. Illinois (9 - 4) Schedule: 5.139 (2) | 6.216 6.216  1 | |||
| 4. Michigan (9 - 4) Schedule: 5.425 (1) | 6.158 6.158  | |||
| 5. Michigan St (7 - 6) Schedule: 5.027 (3) | 5.78 5.78  | |||
| 6. Wisconsin (9 - 4) Schedule: 4.864 (6) | 5.679 5.679  | |||
| 7. Purdue (8 - 5) Schedule: 4.548 (9) | 5.409 5.409  | |||
| 8. Indiana (7 - 6) Schedule: 4.31 (11) | 4.573 4.573  | |||
| 9. Iowa (6 - 6) Schedule: 4.403 (10) | 4.245 4.245  | |||
| 10. Northwestern (6 - 6) Schedule: 4.574 (8) | 4.051 4.051  | |||
| 11. Minnesota (1 - 11) Schedule: 4.992 (4) | 3.032 3.032  |