through games of 1/4/06
Beginning with Football Outsiders Almanac 2009, Brian Fremeau and Bill Connelly, originators of Football Outsiders' two statistical approaches -- FEI and S&P+, respectively -- began to create a combined ranking that would serve as Football Outsiders' 'official' college football rankings.The Fremeau Efficiency Index (FEI) considers each of the nearly 20,000 possessions every season in major college football. All drives are filtered to eliminate first-half clock-kills and end-of-game garbage drives and scores. A scoring rate analysis of the remaining possessions then determines the baseline possession efficiency expectations against which each team is measured. A team is rewarded for playing well against good teams, win or lose, and is punished more severely for playing poorly against bad teams than it is rewarded for playing well against bad teams.The S&P+ Ratings are a college football ratings system derived from both play-by-play and drive data from all 800+ of a season's FBS college football games (and 140,000+ plays). The components for S&P+ reflect the components of four of what Bill Connelly has deemed the Five Factors of college football: efficiency), explosiveness, field position, and finishing drives. (A fifth factor, turnovers, is informed marginally by sack rates, the only quality-based statistic that has a consistent relationship with turnover margins.)NOTE: Because special teams ratings are integrated into Offensive and Defensive S&P+, and because Special Teams has its own ratings within FEI, creating Offensive, Defensive, and Special Teams F/+ ratings has become difficult since the most recent S&P+ redesign. For now, there will therefore be no unit ratings presented -- only overall F/+ ratings.
| F/+ Rk | Team | Rec | F/+ | S&P+ | Rk | FEI | Rk |
| 1 | Texas | 13-0 | 73.5% | 29.3 | 2 | 0.332 | 1 |
| 2 | USC | 12-1 | 71.2% | 29.7 | 1 | 0.313 | 2 |
| 3 | Ohio State | 10-2 | 63.2% | 25.4 | 3 | 0.284 | 3 |
| 4 | Penn State | 11-1 | 54.7% | 20.1 | 4 | 0.270 | 4 |
| 5 | Virginia Tech | 11-2 | 50.8% | 19.8 | 5 | 0.236 | 5 |
| 6 | Michigan | 7-5 | 46.7% | 17.8 | 6 | 0.223 | 6 |
| 7 | Georgia | 10-3 | 45.3% | 17.4 | 7 | 0.215 | 8 |
| 8 | Notre Dame | 9-3 | 43.8% | 16.6 | 8 | 0.211 | 9 |
| 9 | LSU | 11-2 | 41.7% | 14.8 | 9 | 0.218 | 7 |
| 10 | Auburn | 9-3 | 39.6% | 14.6 | 10 | 0.198 | 10 |
| 11 | West Virginia | 11-1 | 38.1% | 14.2 | 12 | 0.189 | 11 |
| 12 | Alabama | 10-2 | 37.2% | 14.0 | 15 | 0.184 | 12 |
| 13 | Miami | 9-3 | 35.2% | 14.2 | 13 | 0.161 | 16 |
| 14 | Boston College | 9-3 | 33.2% | 14.3 | 11 | 0.142 | 19 |
| 15 | Florida | 9-3 | 31.4% | 11.4 | 18 | 0.163 | 15 |
| 16 | Oregon | 10-2 | 31.1% | 11.0 | 19 | 0.166 | 14 |
| 17 | Minnesota | 7-5 | 29.4% | 13.7 | 16 | 0.117 | 24 |
| 18 | Oklahoma | 8-4 | 28.6% | 14.1 | 14 | 0.107 | 27 |
| 19 | Iowa | 7-5 | 27.9% | 8.9 | 23 | 0.168 | 13 |
| 20 | Louisville | 9-3 | 27.1% | 12.7 | 17 | 0.108 | 26 |
| 21 | TCU | 11-1 | 26.9% | 8.8 | 24 | 0.159 | 17 |
| 22 | Fresno State | 8-5 | 26.3% | 10.3 | 20 | 0.127 | 20 |
| 23 | Texas Tech | 9-3 | 22.9% | 8.0 | 29 | 0.126 | 21 |
| 24 | Wisconsin | 10-3 | 22.9% | 6.5 | 37 | 0.155 | 18 |
| 25 | Florida State | 8-5 | 22.4% | 8.2 | 28 | 0.118 | 23 |
| F/+ Rk | Team | Rec | F/+ | S&P+ | Rk | FEI | Rk |
| 26 | Clemson | 8-4 | 22.3% | 7.8 | 30 | 0.123 | 22 |
| 27 | Tennessee | 5-6 | 20.4% | 9.9 | 22 | 0.079 | 32 |
| 28 | Tulsa | 9-4 | 19.8% | 7.3 | 34 | 0.106 | 28 |
| 29 | N.C. State | 7-5 | 19.8% | 8.6 | 25 | 0.088 | 30 |
| 30 | Iowa State | 7-5 | 18.3% | 5.5 | 42 | 0.117 | 25 |
| 31 | Nebraska | 8-4 | 17.9% | 6.3 | 39 | 0.100 | 29 |
| 32 | Georgia Tech | 7-5 | 17.3% | 8.5 | 26 | 0.067 | 36 |
| 33 | Northwestern | 7-5 | 17.0% | 7.7 | 31 | 0.073 | 34 |
| 34 | Arizona State | 7-5 | 16.5% | 6.8 | 35 | 0.081 | 31 |
| 35 | South Florida | 6-6 | 16.5% | 8.5 | 27 | 0.060 | 38 |
| 36 | Southern Miss | 7-5 | 14.5% | 5.9 | 40 | 0.073 | 33 |
| 37 | Colorado | 7-6 | 12.2% | 10.0 | 21 | 0.008 | 56 |
| 38 | Maryland | 5-6 | 12.0% | 6.7 | 36 | 0.040 | 43 |
| 39 | Purdue | 5-6 | 11.4% | 7.6 | 32 | 0.025 | 47 |
| 40 | UCLA | 10-2 | 9.7% | 4.9 | 44 | 0.040 | 42 |
| 41 | Northern Illinois | 7-5 | 9.6% | 2.5 | 50 | 0.071 | 35 |
| 42 | Michigan State | 5-6 | 9.6% | 5.8 | 41 | 0.029 | 45 |
| 43 | South Carolina | 7-5 | 8.6% | 6.4 | 38 | 0.013 | 54 |
| 44 | Arkansas | 4-7 | 8.5% | 7.5 | 33 | 0.000 | 61 |
| 45 | BYU | 6-6 | 8.2% | 5.2 | 43 | 0.023 | 48 |
| 46 | California | 8-4 | 8.2% | 1.9 | 55 | 0.065 | 37 |
| 47 | Washington State | 4-7 | 7.7% | 4.3 | 46 | 0.029 | 46 |
| 48 | Kansas | 7-5 | 7.2% | 4.9 | 45 | 0.018 | 51 |
| 49 | Utah | 7-5 | 6.9% | 2.4 | 51 | 0.046 | 40 |
| 50 | Boise State | 9-4 | 6.8% | 2.1 | 54 | 0.049 | 39 |
| F/+ Rk | Team | Rec | F/+ | S&P+ | Rk | FEI | Rk |
| 51 | Toledo | 9-3 | 5.3% | 1.4 | 60 | 0.045 | 41 |
| 52 | Missouri | 7-5 | 4.1% | 3.6 | 48 | 0.005 | 57 |
| 53 | Memphis | 7-5 | 4.1% | 2.2 | 53 | 0.021 | 50 |
| 54 | Central Michigan | 6-5 | 3.3% | 1.6 | 59 | 0.022 | 49 |
| 55 | Arizona | 3-8 | 2.9% | 2.4 | 52 | 0.009 | 55 |
| 56 | UAB | 5-6 | 2.1% | -0.6 | 68 | 0.039 | 44 |
| 57 | Pittsburgh | 5-6 | 1.2% | 2.8 | 49 | -0.013 | 64 |
| 58 | Virginia | 7-5 | 1.0% | 0.6 | 63 | 0.013 | 53 |
| 59 | Texas A&M | 5-6 | 0.9% | 4.1 | 47 | -0.032 | 74 |
| 60 | Stanford | 5-6 | 0.4% | 1.8 | 57 | -0.007 | 62 |
| 61 | New Mexico | 6-5 | -1.7% | -1.5 | 72 | 0.014 | 52 |
| 62 | Wake Forest | 4-7 | -2.2% | 0.0 | 65 | -0.008 | 63 |
| 63 | North Carolina | 5-6 | -2.4% | 1.7 | 58 | -0.032 | 75 |
| 64 | Baylor | 5-6 | -2.5% | 0.9 | 61 | -0.023 | 70 |
| 65 | Rutgers | 7-5 | -2.7% | 0.5 | 64 | -0.020 | 68 |
| 66 | Colorado State | 6-6 | -5.3% | 0.8 | 62 | -0.049 | 81 |
| 67 | UTEP | 8-4 | -5.4% | -3.2 | 78 | 0.000 | 60 |
| 68 | Oregon State | 5-6 | -5.5% | -0.2 | 66 | -0.037 | 78 |
| 69 | San Diego State | 5-7 | -5.6% | -0.5 | 67 | -0.034 | 77 |
| 70 | Houston | 6-6 | -5.8% | -2.3 | 74 | -0.014 | 65 |
| 71 | Akron | 7-6 | -6.2% | -2.3 | 76 | -0.017 | 66 |
| 72 | Kansas State | 5-6 | -6.3% | -2.3 | 75 | -0.018 | 67 |
| 73 | Vanderbilt | 5-6 | -6.6% | -4.4 | 83 | 0.004 | 58 |
| 74 | Wyoming | 4-7 | -6.8% | -0.9 | 69 | -0.040 | 80 |
| 75 | Air Force | 4-7 | -7.3% | -2.0 | 73 | -0.030 | 73 |
| F/+ Rk | Team | Rec | F/+ | S&P+ | Rk | FEI | Rk |
| 76 | Washington | 2-9 | -7.3% | 1.8 | 56 | -0.084 | 88 |
| 77 | Navy | 8-4 | -8.4% | -5.8 | 90 | 0.002 | 59 |
| 78 | Louisiana Tech | 7-4 | -8.7% | -3.8 | 82 | -0.022 | 69 |
| 79 | Central Florida | 8-5 | -8.8% | -2.9 | 77 | -0.033 | 76 |
| 80 | Miami (Ohio) | 7-4 | -9.2% | -3.5 | 80 | -0.030 | 72 |
| 81 | Connecticut | 5-6 | -10.3% | -4.6 | 86 | -0.027 | 71 |
| 82 | Army | 4-7 | -11.1% | -1.0 | 70 | -0.082 | 87 |
| 83 | SMU | 5-6 | -11.9% | -4.9 | 87 | -0.038 | 79 |
| 84 | Bowling Green | 6-5 | -13.5% | -4.6 | 84 | -0.056 | 82 |
| 85 | East Carolina | 5-6 | -13.7% | -3.5 | 79 | -0.072 | 86 |
| 86 | Oklahoma State | 4-7 | -13.9% | -3.7 | 81 | -0.071 | 85 |
| 87 | Nevada | 9-3 | -17.3% | -4.6 | 85 | -0.092 | 90 |
| 88 | Middle Tennessee | 4-7 | -17.6% | -7.2 | 93 | -0.063 | 83 |
| 89 | Hawaii | 5-7 | -19.2% | -1.3 | 71 | -0.182 | 107 |
| 90 | Marshall | 4-7 | -20.2% | -6.0 | 92 | -0.101 | 92 |
| 91 | Indiana | 4-7 | -20.3% | -5.3 | 89 | -0.113 | 94 |
| 92 | Syracuse | 1-10 | -22.7% | -8.0 | 96 | -0.099 | 91 |
| 93 | Ball State | 4-7 | -23.2% | -5.0 | 88 | -0.150 | 99 |
| 94 | Ole Miss | 3-8 | -23.2% | -7.4 | 94 | -0.112 | 93 |
| 95 | Eastern Michigan | 4-7 | -23.8% | -10.0 | 101 | -0.088 | 89 |
| 96 | Western Michigan | 7-4 | -24.4% | -13.0 | 105 | -0.070 | 84 |
| 97 | Cincinnati | 4-7 | -26.2% | -5.8 | 91 | -0.173 | 104 |
| 98 | Mississippi State | 3-8 | -27.8% | -8.1 | 97 | -0.148 | 98 |
| 99 | UL-Lafayette | 6-5 | -29.7% | -9.9 | 100 | -0.141 | 96 |
| 100 | Rice | 1-10 | -30.6% | -9.0 | 98 | -0.163 | 101 |
| F/+ Rk | Team | Rec | F/+ | S&P+ | Rk | FEI | Rk |
| 101 | Ohio | 4-7 | -30.8% | -10.3 | 102 | -0.146 | 97 |
| 102 | Illinois | 2-9 | -31.6% | -7.5 | 95 | -0.213 | 115 |
| 103 | Kentucky | 3-8 | -31.7% | -9.4 | 99 | -0.168 | 103 |
| 104 | Arkansas State | 6-6 | -37.2% | -12.4 | 104 | -0.180 | 106 |
| 105 | Tulane | 2-9 | -37.2% | -14.9 | 108 | -0.153 | 100 |
| 106 | UL-Monroe | 5-6 | -37.6% | -11.2 | 103 | -0.204 | 114 |
| 107 | Kent State | 1-10 | -38.6% | -19.4 | 117 | -0.138 | 95 |
| 108 | UNLV | 2-9 | -39.3% | -13.3 | 106 | -0.186 | 110 |
| 109 | Florida International | 5-6 | -41.0% | -15.8 | 110 | -0.175 | 105 |
| 110 | North Texas | 2-9 | -41.4% | -17.3 | 115 | -0.167 | 102 |
| 111 | San Jose State | 3-8 | -42.2% | -15.8 | 111 | -0.184 | 108 |
| 112 | Duke | 1-10 | -42.9% | -16.4 | 113 | -0.185 | 109 |
| 113 | Troy | 4-7 | -43.2% | -16.4 | 112 | -0.187 | 111 |
| 114 | Utah State | 3-8 | -43.6% | -15.4 | 109 | -0.200 | 112 |
| 115 | Idaho | 2-9 | -47.0% | -18.1 | 116 | -0.203 | 113 |
| 116 | Florida Atlantic | 2-9 | -50.0% | -16.6 | 114 | -0.247 | 118 |
| 117 | Temple | 0-11 | -50.2% | -14.7 | 107 | -0.313 | 119 |
| 118 | Buffalo | 1-10 | -52.3% | -21.7 | 119 | -0.218 | 116 |
| 119 | New Mexico State | 0-12 | -53.3% | -20.0 | 118 | -0.236 | 117 |