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 (14 - 0) Schedule: 5.813 (4) | 8.2 8.2  | |||
| 2. Iowa (11 - 2) Schedule: 5.668 (7) | 7.872 7.872  | |||
| 3. Penn State (9 - 4) Schedule: 5.826 (3) | 7.515 7.515  | |||
| 4. Michigan (10 - 3) Schedule: 6.306 (1) | 7.298 7.298  | |||
| 5. Purdue (7 - 6) Schedule: 5.637 (9) | 6.458 6.458  1 | |||
| 6. Wisconsin (8 - 6) Schedule: 5.97 (2) | 6.443 6.443  1 | |||
| 7. Minnesota (8 - 5) Schedule: 5.344 (11) | 6.047 6.047  | |||
| 8. Illinois (5 - 7) Schedule: 5.633 (10) | 5.485 5.485  | |||
| 9. Michigan St (4 - 8) Schedule: 5.682 (6) | 4.686 4.686  | |||
| 10. Northwestern (3 - 9) Schedule: 5.729 (5) | 3.816 3.816  | |||
| 11. Indiana (3 - 9) Schedule: 5.658 (8) | 3.492 3.492  |