| 2015 College Football Ratings Summary |
| College |
Conference |
W |
L |
P-Rank |
P-Rating |
R-Rank |
R-Rating |
CFP Rank |
AP Rank |
| Florida | SEC | 5 | 0 | 11 | 17.5 | 2 | 17.8 | | 11 |
| Ohio State | Big Ten | 5 | 0 | 9 | 17.7 | 5 | 15.5 | | 1 |
| Texas A&M | SEC | 5 | 0 | 7 | 18.0 | 8 | 15.2 | | 9 |
| Michigan State | Big Ten | 5 | 0 | 40 | 8.3 | 18 | 12.6 | | 4 |
| Northwestern | Big Ten | 4 | 0 | 29 | 10.3 | 1 | 18.0 | | 13 |
| LSU | SEC | 4 | 0 | 18 | 16.4 | 3 | 16.5 | | 7 |
| Texas Christian | Big 12 | 4 | 0 | 15 | 16.8 | 4 | 16.0 | | 2 |
| Temple | American Athletic | 4 | 0 | 58 | 2.9 | 6 | 15.3 | | |
| Utah | Pac 12 | 4 | 0 | 13 | 17.3 | 7 | 15.2 | | 5 |
| Iowa | Big Ten | 4 | 0 | 27 | 11.2 | 9 | 15.0 | | 22 |
| Oklahoma | Big 12 | 4 | 0 | 4 | 20.4 | 11 | 13.9 | | 10 |
| California | Pac 12 | 4 | 0 | 39 | 8.7 | 12 | 13.8 | | 23 |
| Oklahoma State | Big 12 | 4 | 0 | 23 | 12.8 | 13 | 13.7 | | 21 |
| Memphis | American Athletic | 4 | 0 | 50 | 5.3 | 14 | 13.5 | | |
| Toledo | Mid-American | 4 | 0 | 48 | 5.7 | 15 | 13.5 | | 24 |
| Stanford | Pac 12 | 4 | 1 | 5 | 19.3 | 17 | 12.7 | | 16 |
| Florida State | ACC | 4 | 0 | 19 | 16.0 | 20 | 11.6 | | 12 |
| Michigan | Big Ten | 4 | 1 | 14 | 17.1 | 23 | 10.0 | | 18 |
| Alabama | SEC | 4 | 1 | 2 | 25.0 | 25 | 8.7 | | 8 |
| Western Kentucky | Conference USA | 4 | 1 | 47 | 6.9 | 27 | 7.8 | | |
| UCLA | Pac 12 | 4 | 1 | 21 | 14.3 | 28 | 7.6 | | 20 |
| Notre Dame | Independent | 4 | 1 | 16 | 16.8 | 29 | 7.5 | | 15 |
| Penn State | Big Ten | 4 | 1 | 59 | 2.4 | 39 | 6.0 | | |
| Clemson | ACC | 3 | 0 | 10 | 17.6 | 10 | 14.3 | | 6 |
| Houston | American Athletic | 3 | 0 | 32 | 9.7 | 16 | 13.1 | | |
| Navy | American Athletic | 3 | 0 | 49 | 5.7 | 19 | 12.2 | | |
| Baylor | Big 12 | 3 | 0 | 1 | 25.5 | 21 | 11.5 | | 3 |
| Mississippi | SEC | 3 | 1 | 12 | 17.4 | 22 | 10.8 | | 14 |
| Kentucky | SEC | 3 | 1 | 52 | 5.2 | 24 | 8.7 | | |
| Indiana | Big Ten | 3 | 1 | 55 | 3.9 | 26 | 8.2 | | |
| Ohio U. | Mid-American | 3 | 1 | 85 | -5.2 | 31 | 7.0 | | |
| USC | Pac 12 | 3 | 1 | 3 | 23.0 | 32 | 6.8 | | 17 |
| Missouri | SEC | 3 | 1 | 51 | 5.3 | 33 | 6.7 | | |
| Minnesota | Big Ten | 3 | 2 | 76 | -2.8 | 34 | 6.5 | | |
| Duke | ACC | 3 | 1 | 45 | 7.4 | 36 | 6.3 | | |
| Brigham Young | Independent | 3 | 2 | 42 | 8.1 | 38 | 6.0 | | |
| Boise State | Mountain West | 3 | 1 | 17 | 16.5 | 41 | 5.5 | | 25 |
| Georgia | SEC | 3 | 1 | 6 | 18.5 | 42 | 4.8 | | 19 |
| Georgia Southern | Sun Belt | 3 | 1 | 77 | -3.0 | 43 | 4.4 | | |
| Marshall | Conference USA | 3 | 1 | 72 | -2.1 | 47 | 4.0 | | |
| Illinois | Big Ten | 3 | 1 | 60 | 2.3 | 50 | 3.3 | | |
| North Carolina State | ACC | 3 | 1 | 36 | 9.1 | 56 | 2.4 | | |
| Wisconsin | Big Ten | 3 | 2 | 26 | 11.3 | 59 | 0.5 | | |
| Bowling Green State | Mid-American | 3 | 2 | 73 | -2.5 | 60 | 0.4 | | |
| Pittsburgh | ACC | 2 | 1 | 38 | 9.0 | 30 | 7.4 | | |
| Mississippi State | SEC | 2 | 2 | 20 | 14.8 | 35 | 6.4 | | |
| West Virginia | Big 12 | 2 | 1 | 8 | 17.7 | 37 | 6.1 | | |
| Kansas State | Big 12 | 2 | 1 | 25 | 11.5 | 40 | 5.6 | | |
| Washington State | Pac 12 | 2 | 1 | 63 | 0.9 | 44 | 4.3 | | |
| Arizona State | Pac 12 | 2 | 2 | 37 | 9.1 | 45 | 4.2 | | |
| East Carolina | American Athletic | 2 | 2 | 57 | 3.0 | 46 | 4.0 | | |
| Syracuse | ACC | 2 | 1 | 65 | 0.4 | 48 | 3.9 | | |
| Appalachian State | Sun Belt | 2 | 1 | 75 | -2.8 | 49 | 3.7 | | |
| Cincinnati | American Athletic | 2 | 2 | 68 | -0.3 | 51 | 3.2 | | |
| Miami (Fla.) | ACC | 2 | 1 | 44 | 7.4 | 52 | 3.0 | | |
| North Carolina | ACC | 2 | 1 | 24 | 12.4 | 53 | 2.9 | | |
| Oregon | Pac 12 | 2 | 2 | 43 | 7.8 | 54 | 2.8 | | |
| Texas Tech | Big 12 | 2 | 2 | 31 | 9.8 | 55 | 2.4 | | |
| Tulsa | American Athletic | 2 | 2 | 84 | -5.1 | 57 | 2.1 | | |
| Auburn | SEC | 2 | 2 | 33 | 9.7 | 58 | 1.2 | | |
| Arizona | Pac 12 | 2 | 2 | 64 | 0.5 | 61 | 0.2 | | |
| South Carolina | SEC | 2 | 3 | 54 | 4.3 | 63 | -1.2 | | |
| Louisiana Tech | Conference USA | 2 | 2 | 53 | 4.5 | 64 | -1.2 | | |
| Arkansas | SEC | 2 | 3 | 35 | 9.2 | 67 | -1.7 | | |
| Nebraska | Big Ten | 2 | 3 | 41 | 8.1 | 71 | -2.5 | | |
| South Alabama | Sun Belt | 2 | 2 | 117 | -17.7 | 72 | -2.6 | | |
| Colorado | Pac 12 | 2 | 2 | 79 | -3.7 | 74 | -3.2 | | |
| Southern Mississippi | Conference USA | 2 | 2 | 83 | -5.1 | 79 | -3.8 | | |
| New Mexico | Mountain West | 2 | 2 | 110 | -15.1 | 86 | -5.4 | | |
| Air Force | Mountain West | 1 | 2 | 82 | -4.9 | 62 | -0.8 | | |
| Louisville | ACC | 1 | 3 | 34 | 9.3 | 65 | -1.5 | | |
| Washington | Pac 12 | 1 | 2 | 30 | 10.0 | 66 | -1.6 | | |
| Ball State | Mid-American | 1 | 3 | 87 | -6.8 | 68 | -1.9 | | |
| Iowa State | Big 12 | 1 | 2 | 69 | -0.4 | 69 | -2.1 | | |
| Oregon State | Pac 12 | 1 | 2 | 67 | -0.3 | 70 | -2.4 | | |
| Boston College | ACC | 1 | 2 | 61 | 2.2 | 73 | -2.6 | | |
| Utah State | Mountain West | 1 | 2 | 66 | -0.1 | 75 | -3.3 | | |
| Hawaii | Mountain West | 1 | 3 | 107 | -14.6 | 76 | -3.4 | | |
| Tennessee | SEC | 1 | 3 | 22 | 14.2 | 77 | -3.4 | | |
| Central Michigan | Mid-American | 1 | 3 | 80 | -4.3 | 78 | -3.5 | | |
| Texas | Big 12 | 1 | 4 | 70 | -1.1 | 80 | -4.1 | | |
| Wake Forest | ACC | 1 | 3 | 78 | -3.1 | 81 | -4.4 | | |
| Vanderbilt | SEC | 1 | 3 | 56 | 3.1 | 82 | -4.7 | | |
| Connecticut | American Athletic | 1 | 3 | 86 | -6.6 | 83 | -4.7 | | |
| Akron | Mid-American | 1 | 3 | 95 | -9.4 | 84 | -5.2 | | |
| Virginia Tech | ACC | 1 | 3 | 46 | 7.0 | 85 | -5.3 | | |
| Nevada-Las Vegas | Mountain West | 1 | 3 | 100 | -10.8 | 87 | -5.5 | | |
| Rutgers | Big Ten | 1 | 2 | 81 | -4.4 | 88 | -5.5 | | |
| Massachusetts | Mid-American | 1 | 3 | 106 | -14.6 | 89 | -5.5 | | |
| Arkansas State | Sun Belt | 1 | 3 | 102 | -12.2 | 90 | -5.7 | | |
| Georgia Tech | ACC | 1 | 3 | 28 | 10.7 | 91 | -6.1 | | |
| Northern Illinois | Mid-American | 1 | 3 | 74 | -2.5 | 92 | -6.2 | | |
| Rice | Conference USA | 1 | 3 | 112 | -15.6 | 93 | -6.7 | | |
| Southern Methodist | American Athletic | 1 | 3 | 104 | -13.5 | 94 | -7.0 | | |
| Kent State | Mid-American | 1 | 3 | 118 | -18.2 | 96 | -7.5 | | |
| Florida International | Conference USA | 1 | 3 | 96 | -9.4 | 97 | -7.6 | | |
| Maryland | Big Ten | 1 | 3 | 90 | -6.9 | 98 | -7.7 | | |
| Colorado State | Mountain West | 1 | 3 | 92 | -7.5 | 99 | -7.8 | | |
| Old Dominion | Conference USA | 1 | 3 | 122 | -22.5 | 100 | -8.0 | | |
| San Diego State | Mountain West | 1 | 3 | 101 | -11.3 | 101 | -8.2 | | |
| Nevada | Mountain West | 1 | 3 | 97 | -9.8 | 102 | -8.2 | | |
| Tulane | American Athletic | 1 | 2 | 113 | -16.7 | 103 | -8.4 | | |
| Middle Tennessee State | Conference USA | 1 | 3 | 62 | 1.2 | 104 | -8.5 | | |
| San Jose State | Mountain West | 1 | 3 | 94 | -8.8 | 105 | -8.7 | | |
| Buffalo | Mid-American | 1 | 3 | 99 | -10.0 | 106 | -9.4 | | |
| Army | Independent | 1 | 3 | 91 | -7.1 | 107 | -9.4 | | |
| Texas-San Antonio | Conference USA | 1 | 4 | 109 | -15.0 | 109 | -9.7 | | |
| Florida Atlantic | Conference USA | 1 | 3 | 111 | -15.2 | 110 | -9.7 | | |
| North Carolina-Charlotte | Conference USA | 1 | 3 | 128 | -30.9 | 111 | -10.1 | | |
| Georgia State | Sun Belt | 1 | 2 | 125 | -24.8 | 112 | -10.1 | | |
| Texas-El Paso | Conference USA | 1 | 3 | 123 | -23.3 | 116 | -11.6 | | |
| Eastern Michigan | Mid-American | 1 | 4 | 119 | -18.7 | 124 | -15.0 | | |
| Western Michigan | Mid-American | 0 | 3 | 98 | -9.9 | 95 | -7.3 | | |
| Louisiana-Monroe | Sun Belt | 0 | 3 | 108 | -14.7 | 108 | -9.6 | | |
| Virginia | ACC | 0 | 3 | 71 | -1.7 | 113 | -10.2 | | |
| South Florida | American Athletic | 0 | 3 | 88 | -6.8 | 114 | -10.6 | | |
| Texas State | Sun Belt | 0 | 3 | 115 | -17.5 | 115 | -11.1 | | |
| Kansas | Big 12 | 0 | 3 | 105 | -13.9 | 117 | -11.8 | | |
| Troy | Sun Belt | 0 | 3 | 116 | -17.5 | 118 | -12.8 | | |
| Idaho | Sun Belt | 0 | 4 | 124 | -23.4 | 119 | -13.2 | | |
| Louisiana-Lafayette | Sun Belt | 0 | 3 | 103 | -13.3 | 120 | -13.3 | | |
| Miami (Ohio) | Mid-American | 0 | 4 | 121 | -21.7 | 121 | -13.7 | | |
| Fresno State | Mountain West | 0 | 4 | 114 | -17.2 | 122 | -14.0 | | |
| Purdue | Big Ten | 0 | 4 | 89 | -6.9 | 123 | -14.8 | | |
| North Texas | Conference USA | 0 | 4 | 127 | -26.0 | 125 | -16.1 | | |
| Central Florida | American Athletic | 0 | 4 | 93 | -8.4 | 126 | -16.3 | | |
| Wyoming | Mountain West | 0 | 4 | 120 | -20.5 | 127 | -19.1 | | |
| New Mexico State | Sun Belt | 0 | 4 | 126 | -25.0 | 128 | -19.7 | | |
College sports ratings use a somewhat less sophisticated version of the NFL model that does not use individual play data. Final scores and game location are the only data used. Unlike BCS computer ratings, point difference is factored rather than simply the outcome of the game. Instead of adjusting ratings for repeatability, both teams in each game are given equal responsibility for the result. Each team is assigned a normal probability distribution for quality such that the most likely scenario considering all games at once is optimized. In doing so, home field advantage is factored where applicable and strength of schedule is automatically accounted for. After 1 game, a team's rating will simply be their net points divided by 2. Past the first game, relative strength of opponents and how far a result is from the expected result begin to factor in. Like the NFL ratings, the first few weeks' ratings are unreliable but quickly become increasingly accurate thereafter. Subtracting one team's rating from another's will give an expected point spread should they play at a neutral site.
