| 2015 College Football Ratings Summary |
| College |
Conference |
W |
L |
P-Rank |
P-Rating |
R-Rank |
R-Rating |
CFP Rank |
AP Rank |
| Air Force | Mountain West | 3 | 3 | 85 | -5.8 | 79 | -2.9 | | |
| Akron | Mid-American | 2 | 4 | 97 | -11.2 | 84 | -5.0 | | |
| Alabama | SEC | 7 | 1 | 4 | 23.2 | 11 | 14.9 | | 7 |
| Appalachian State | Sun Belt | 5 | 1 | 49 | 6.1 | 25 | 9.9 | | |
| Arizona | Pac 12 | 4 | 3 | 56 | 3.7 | 51 | 2.0 | | |
| Arizona State | Pac 12 | 3 | 3 | 39 | 8.3 | 48 | 3.1 | | |
| Arkansas | SEC | 3 | 4 | 34 | 9.8 | 56 | 1.1 | | |
| Arkansas State | Sun Belt | 3 | 3 | 93 | -9.6 | 73 | -1.7 | | |
| Army | Independent | 1 | 5 | 100 | -12.5 | 116 | -13.6 | | |
| Auburn | SEC | 3 | 3 | 35 | 9.1 | 47 | 3.3 | | |
| Ball State | Mid-American | 1 | 6 | 101 | -12.5 | 117 | -13.9 | | |
| Baylor | Big 12 | 6 | 0 | 1 | 27.9 | 12 | 14.9 | | 2 |
| Boise State | Mountain West | 5 | 2 | 26 | 12.1 | 42 | 4.5 | | |
| Boston College | ACC | 1 | 5 | 61 | 3.2 | 106 | -10.0 | | |
| Bowling Green State | Mid-American | 6 | 2 | 45 | 6.4 | 36 | 5.6 | | |
| Brigham Young | Independent | 5 | 2 | 43 | 7.6 | 30 | 8.9 | | |
| Buffalo | Mid-American | 2 | 4 | 94 | -9.8 | 90 | -7.2 | | |
| California | Pac 12 | 4 | 2 | 31 | 11.1 | 22 | 11.7 | | |
| Central Florida | American Athletic | 0 | 7 | 107 | -14.8 | 127 | -20.0 | | |
| Central Michigan | Mid-American | 3 | 4 | 71 | -0.3 | 75 | -1.7 | | |
| Cincinnati | American Athletic | 3 | 3 | 67 | 1.1 | 50 | 2.5 | | |
| Clemson | ACC | 6 | 0 | 2 | 25.7 | 5 | 19.1 | | 3 |
| Colorado | Pac 12 | 3 | 4 | 84 | -4.8 | 86 | -5.9 | | |
| Colorado State | Mountain West | 2 | 4 | 90 | -7.5 | 93 | -7.5 | | |
| Connecticut | American Athletic | 2 | 5 | 87 | -7.0 | 99 | -9.0 | | |
| Duke | ACC | 5 | 1 | 33 | 10.2 | 33 | 7.8 | | 22 |
| East Carolina | American Athletic | 3 | 4 | 64 | 1.7 | 52 | 1.8 | | |
| Eastern Michigan | Mid-American | 1 | 7 | 122 | -23.5 | 126 | -19.4 | | |
| Florida | SEC | 6 | 1 | 11 | 17.4 | 10 | 15.8 | | 11 |
| Florida Atlantic | Conference USA | 1 | 6 | 114 | -18.8 | 122 | -15.7 | | |
| Florida International | Conference USA | 3 | 4 | 91 | -7.5 | 95 | -8.2 | | |
| Florida State | ACC | 6 | 1 | 19 | 15.6 | 32 | 7.9 | | 17 |
| Fresno State | Mountain West | 1 | 6 | 118 | -20.6 | 112 | -12.2 | | |
| Georgia | SEC | 4 | 2 | 20 | 14.8 | 44 | 4.0 | | |
| Georgia Southern | Sun Belt | 4 | 2 | 80 | -3.5 | 45 | 3.6 | | |
| Georgia State | Sun Belt | 2 | 3 | 121 | -22.7 | 103 | -9.3 | | |
| Georgia Tech | ACC | 2 | 5 | 30 | 11.1 | 71 | -1.3 | | |
| Hawaii | Mountain West | 1 | 6 | 109 | -15.7 | 110 | -11.8 | | |
| Houston | American Athletic | 6 | 0 | 25 | 13.5 | 16 | 13.7 | | 18 |
| Idaho | Sun Belt | 2 | 4 | 117 | -20.5 | 97 | -8.4 | | |
| Illinois | Big Ten | 3 | 3 | 66 | 1.4 | 61 | 0.5 | | |
| Indiana | Big Ten | 3 | 4 | 72 | -1.2 | 53 | 1.3 | | |
| Iowa | Big Ten | 6 | 0 | 22 | 14.0 | 1 | 21.4 | | 10 |
| Iowa State | Big 12 | 1 | 5 | 76 | -2.4 | 85 | -5.1 | | |
| Kansas | Big 12 | 0 | 6 | 111 | -16.5 | 114 | -13.2 | | |
| Kansas State | Big 12 | 2 | 4 | 55 | 3.8 | 68 | -0.8 | | |
| Kent State | Mid-American | 2 | 5 | 120 | -20.7 | 92 | -7.3 | | |
| Kentucky | SEC | 3 | 3 | 59 | 3.4 | 54 | 1.1 | | |
| Louisiana Tech | Conference USA | 4 | 3 | 60 | 3.2 | 65 | -0.1 | | |
| Louisiana-Lafayette | Sun Belt | 1 | 4 | 99 | -12.4 | 108 | -11.2 | | |
| Louisiana-Monroe | Sun Belt | 0 | 6 | 119 | -20.7 | 120 | -15.1 | | |
| Louisville | ACC | 2 | 4 | 38 | 8.5 | 69 | -1.1 | | |
| LSU | SEC | 7 | 0 | 10 | 18.3 | 2 | 20.8 | | 4 |
| Marshall | Conference USA | 6 | 1 | 74 | -2.3 | 39 | 5.2 | | |
| Maryland | Big Ten | 1 | 5 | 77 | -2.7 | 87 | -6.0 | | |
| Massachusetts | Mid-American | 1 | 6 | 108 | -15.3 | 109 | -11.3 | | |
| Memphis | American Athletic | 6 | 0 | 28 | 11.4 | 4 | 19.4 | | 16 |
| Miami (Fla.) | ACC | 3 | 3 | 58 | 3.4 | 58 | 0.8 | | |
| Miami (Ohio) | Mid-American | 0 | 7 | 126 | -25.3 | 125 | -17.3 | | |
| Michigan | Big Ten | 5 | 2 | 12 | 17.4 | 24 | 10.6 | | 15 |
| Michigan State | Big Ten | 8 | 0 | 27 | 11.9 | 3 | 20.3 | | 6 |
| Middle Tennessee State | Conference USA | 2 | 5 | 83 | -4.7 | 96 | -8.3 | | |
| Minnesota | Big Ten | 4 | 3 | 78 | -3.2 | 55 | 1.1 | | |
| Mississippi | SEC | 5 | 2 | 17 | 16.1 | 19 | 13.0 | | 19 |
| Mississippi State | SEC | 5 | 2 | 15 | 16.4 | 27 | 9.7 | | 25 |
| Missouri | SEC | 3 | 4 | 52 | 4.5 | 70 | -1.2 | | |
| Navy | American Athletic | 4 | 1 | 54 | 3.8 | 31 | 8.5 | | |
| Nebraska | Big Ten | 3 | 5 | 42 | 7.8 | 77 | -2.1 | | |
| Nevada | Mountain West | 3 | 4 | 95 | -10.3 | 98 | -8.8 | | |
| Nevada-Las Vegas | Mountain West | 1 | 5 | 103 | -12.9 | 111 | -12.0 | | |
| New Mexico | Mountain West | 3 | 4 | 113 | -17.3 | 105 | -9.5 | | |
| New Mexico State | Sun Belt | 0 | 7 | 127 | -30.3 | 128 | -23.8 | | |
| North Carolina | ACC | 4 | 1 | 23 | 13.8 | 38 | 5.2 | | |
| North Carolina State | ACC | 4 | 2 | 41 | 8.2 | 64 | 0.0 | | |
| North Carolina-Charlotte | Conference USA | 1 | 5 | 128 | -32.1 | 118 | -14.8 | | |
| North Texas | Conference USA | 0 | 6 | 123 | -23.7 | 123 | -16.2 | | |
| Northern Illinois | Mid-American | 4 | 3 | 68 | 0.5 | 81 | -4.5 | | |
| Northwestern | Big Ten | 5 | 2 | 53 | 4.0 | 21 | 12.3 | | |
| Notre Dame | Independent | 6 | 1 | 7 | 19.7 | 14 | 14.2 | | 9 |
| Ohio State | Big Ten | 8 | 0 | 5 | 21.1 | 6 | 18.5 | | 1 |
| Ohio U. | Mid-American | 4 | 3 | 96 | -11.0 | 66 | -0.2 | | |
| Oklahoma | Big 12 | 6 | 1 | 3 | 24.5 | 23 | 11.4 | | 14 |
| Oklahoma State | Big 12 | 6 | 0 | 14 | 16.7 | 9 | 17.2 | | 12 |
| Old Dominion | Conference USA | 2 | 4 | 124 | -24.7 | 101 | -9.2 | | |
| Oregon | Pac 12 | 3 | 3 | 40 | 8.3 | 43 | 4.2 | | |
| Oregon State | Pac 12 | 1 | 5 | 88 | -7.1 | 100 | -9.1 | | |
| Penn State | Big Ten | 6 | 2 | 57 | 3.5 | 26 | 9.7 | | |
| Pittsburgh | ACC | 5 | 1 | 36 | 9.0 | 18 | 13.2 | | 23 |
| Purdue | Big Ten | 0 | 6 | 92 | -8.2 | 121 | -15.7 | | |
| Rice | Conference USA | 3 | 3 | 104 | -13.3 | 74 | -1.7 | | |
| Rutgers | Big Ten | 2 | 4 | 82 | -4.5 | 60 | 0.6 | | |
| San Diego State | Mountain West | 4 | 3 | 75 | -2.4 | 63 | 0.1 | | |
| San Jose State | Mountain West | 3 | 4 | 98 | -11.9 | 89 | -6.9 | | |
| South Alabama | Sun Belt | 2 | 4 | 116 | -19.6 | 91 | -7.3 | | |
| South Carolina | SEC | 3 | 4 | 63 | 3.0 | 72 | -1.6 | | |
| South Florida | American Athletic | 3 | 3 | 69 | 0.4 | 67 | -0.7 | | |
| Southern Methodist | American Athletic | 1 | 5 | 102 | -12.5 | 102 | -9.3 | | |
| Southern Mississippi | Conference USA | 4 | 3 | 81 | -4.1 | 76 | -1.7 | | |
| Stanford | Pac 12 | 6 | 1 | 8 | 19.2 | 17 | 13.6 | | 8 |
| Syracuse | ACC | 2 | 4 | 73 | -1.5 | 82 | -4.5 | | |
| Temple | American Athletic | 7 | 0 | 51 | 5.0 | 8 | 17.2 | | 21 |
| Tennessee | SEC | 2 | 4 | 13 | 17.3 | 57 | 0.9 | | |
| Texas | Big 12 | 3 | 4 | 50 | 5.5 | 40 | 5.2 | | |
| Texas A&M | SEC | 5 | 2 | 24 | 13.7 | 28 | 9.2 | | |
| Texas Christian | Big 12 | 6 | 0 | 9 | 18.3 | 7 | 18.3 | | 5 |
| Texas State | Sun Belt | 1 | 4 | 112 | -17.0 | 107 | -10.0 | | |
| Texas Tech | Big 12 | 4 | 3 | 37 | 8.8 | 41 | 4.7 | | |
| Texas-El Paso | Conference USA | 2 | 4 | 125 | -25.1 | 113 | -12.6 | | |
| Texas-San Antonio | Conference USA | 1 | 6 | 106 | -14.8 | 115 | -13.3 | | |
| Toledo | Mid-American | 7 | 0 | 46 | 6.3 | 15 | 13.7 | | 20 |
| Troy | Sun Belt | 1 | 5 | 105 | -13.5 | 119 | -14.9 | | |
| Tulane | American Athletic | 1 | 5 | 115 | -19.0 | 104 | -9.3 | | |
| Tulsa | American Athletic | 3 | 4 | 89 | -7.4 | 78 | -2.1 | | |
| UCLA | Pac 12 | 5 | 2 | 21 | 14.1 | 29 | 9.0 | | 24 |
| USC | Pac 12 | 4 | 3 | 6 | 21.0 | 37 | 5.3 | | |
| Utah | Pac 12 | 6 | 1 | 16 | 16.2 | 13 | 14.3 | | 13 |
| Utah State | Mountain West | 3 | 3 | 62 | 3.1 | 59 | 0.7 | | |
| Vanderbilt | SEC | 2 | 4 | 65 | 1.6 | 80 | -3.7 | | |
| Virginia | ACC | 1 | 5 | 70 | 0.1 | 88 | -6.2 | | |
| Virginia Tech | ACC | 2 | 5 | 44 | 7.1 | 83 | -4.5 | | |
| Wake Forest | ACC | 2 | 5 | 86 | -5.9 | 94 | -8.0 | | |
| Washington | Pac 12 | 2 | 4 | 32 | 10.7 | 62 | 0.4 | | |
| Washington State | Pac 12 | 5 | 1 | 47 | 6.2 | 20 | 12.9 | | |
| West Virginia | Big 12 | 2 | 3 | 18 | 15.8 | 49 | 2.5 | | |
| Western Kentucky | Conference USA | 6 | 2 | 48 | 6.2 | 35 | 7.6 | | |
| Western Michigan | Mid-American | 3 | 3 | 79 | -3.2 | 46 | 3.5 | | |
| Wisconsin | Big Ten | 6 | 2 | 29 | 11.4 | 34 | 7.7 | | |
| Wyoming | Mountain West | 1 | 6 | 110 | -16.0 | 124 | -16.4 | | |
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.
