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 | American Athletic Conference | Big 10 | Big 12 | Conference USA | Division I-A Independents | Mid-American Conference | MWC | Pac-12 | SEC | Sun Belt Conference
| Place | Team | Rating | Strength of Schedule | +/- | 
|---|---|---|---|---|
| 1. Wisconsin (13 - 1) Schedule: 5.665 (9) | 8.511 8.511  | |||
| 2. Ohio State (12 - 2) Schedule: 5.953 (5) | 8.262 8.262  1 | |||
| 3. Penn State (11 - 2) Schedule: 5.732 (7) | 8.233 8.233  1 | |||
| 4. Michigan St (10 - 3) Schedule: 5.973 (4) | 7.091 7.091  2 | |||
| 5. Iowa (8 - 5) Schedule: 6.117 (2) | 7.07 7.07  | |||
| 6. Michigan (8 - 5) Schedule: 5.804 (6) | 6.893 6.893  2 | |||
| 7. Northwestern (10 - 3) Schedule: 5.543 (11) | 6.623 6.623  | |||
| 8. Purdue (7 - 6) Schedule: 5.689 (8) | 6.204 6.204  | |||
| 9. Indiana (5 - 7) Schedule: 5.516 (13) | 5.467 5.467  | |||
| 10. Minnesota (5 - 7) Schedule: 5.486 (14) | 5.22 5.22  | |||
| 11. Nebraska (4 - 8) Schedule: 5.994 (3) | 4.917 4.917  | |||
| 12. Maryland (4 - 8) Schedule: 6.368 (1) | 4.813 4.813  | |||
| 13. Rutgers (4 - 8) Schedule: 5.518 (12) | 4.03 4.03  | |||
| 14. Illinois (2 - 10) Schedule: 5.549 (10) | 3.225 3.225  |