| 2015 College Football Ratings Summary |
| College |
Conference |
W |
L |
P-Rank |
P-Rating |
R-Rank |
R-Rating |
CFP Rank |
AP Rank |
| Baylor | Big 12 | 6 | 0 | 1 | 27.5 | 16 | 14.6 | 6 | 2 |
| Oklahoma | Big 12 | 7 | 1 | 2 | 25.8 | 21 | 11.4 | 15 | 14 |
| Clemson | ACC | 7 | 0 | 3 | 25.3 | 1 | 21.4 | 1 | 3 |
| Alabama | SEC | 7 | 1 | 4 | 23.2 | 12 | 15.6 | 4 | 7 |
| Ohio State | Big Ten | 8 | 0 | 5 | 21.2 | 8 | 18.4 | 3 | 1 |
| USC | Pac 12 | 5 | 3 | 6 | 20.8 | 28 | 9.1 | | |
| Texas Christian | Big 12 | 7 | 0 | 7 | 20.7 | 7 | 18.7 | 8 | 5 |
| Tennessee | SEC | 3 | 4 | 8 | 19.5 | 46 | 3.5 | | |
| Florida | SEC | 7 | 1 | 9 | 19.3 | 10 | 17.0 | 10 | 11 |
| Notre Dame | Independent | 7 | 1 | 10 | 18.9 | 9 | 18.4 | 5 | 8 |
| LSU | SEC | 7 | 0 | 11 | 18.1 | 4 | 20.9 | 2 | 4 |
| Stanford | Pac 12 | 7 | 1 | 12 | 18.1 | 11 | 16.7 | 11 | 9 |
| Oklahoma State | Big 12 | 7 | 0 | 13 | 17.2 | 6 | 18.9 | 14 | 12 |
| Mississippi | SEC | 6 | 2 | 14 | 16.6 | 14 | 15.1 | 18 | 19 |
| Mississippi State | SEC | 5 | 2 | 15 | 16.2 | 26 | 9.6 | 20 | 24 |
| Michigan | Big Ten | 6 | 2 | 16 | 16.1 | 19 | 12.2 | 17 | 16 |
| Florida State | ACC | 7 | 1 | 17 | 15.6 | 35 | 8.2 | 16 | 17 |
| Utah | Pac 12 | 7 | 1 | 18 | 15.2 | 13 | 15.2 | 12 | 13 |
| Houston | American Athletic | 7 | 0 | 19 | 14.9 | 15 | 14.6 | 25 | 18 |
| Washington | Pac 12 | 3 | 4 | 20 | 14.4 | 48 | 3.1 | | |
| North Carolina | ACC | 5 | 1 | 21 | 14.0 | 30 | 8.8 | | 21 |
| Iowa | Big Ten | 7 | 0 | 22 | 13.6 | 2 | 21.3 | 9 | 10 |
| West Virginia | Big 12 | 2 | 4 | 23 | 13.4 | 51 | 2.2 | | |
| Texas A&M | SEC | 6 | 2 | 24 | 12.7 | 23 | 10.2 | 19 | 25 |
| Michigan State | Big Ten | 8 | 0 | 25 | 12.7 | 3 | 21.0 | 7 | 6 |
| Boise State | Mountain West | 6 | 2 | 26 | 12.7 | 40 | 6.0 | | |
| Georgia | SEC | 4 | 3 | 27 | 12.7 | 47 | 3.4 | | |
| Wisconsin | Big Ten | 7 | 2 | 28 | 12.7 | 33 | 8.5 | | |
| UCLA | Pac 12 | 6 | 2 | 29 | 11.8 | 31 | 8.7 | 23 | 22 |
| Memphis | American Athletic | 7 | 0 | 30 | 11.2 | 5 | 20.1 | 13 | 15 |
| California | Pac 12 | 4 | 3 | 31 | 11.2 | 34 | 8.3 | | |
| Arkansas | SEC | 3 | 4 | 32 | 9.8 | 55 | 1.4 | | |
| Oregon | Pac 12 | 4 | 3 | 33 | 9.8 | 37 | 6.7 | | |
| Georgia Tech | ACC | 2 | 6 | 34 | 9.6 | 80 | -3.7 | | |
| Duke | ACC | 5 | 2 | 35 | 8.7 | 45 | 3.6 | | |
| Virginia Tech | ACC | 3 | 5 | 36 | 8.6 | 79 | -3.2 | | |
| Pittsburgh | ACC | 5 | 2 | 37 | 8.4 | 32 | 8.6 | | |
| Auburn | SEC | 3 | 4 | 38 | 8.4 | 52 | 1.8 | | |
| North Carolina State | ACC | 4 | 3 | 39 | 8.4 | 65 | -0.5 | | |
| Texas Tech | Big 12 | 4 | 4 | 40 | 8.1 | 43 | 4.1 | | |
| Brigham Young | Independent | 5 | 2 | 41 | 7.5 | 29 | 8.9 | | |
| Louisville | ACC | 3 | 4 | 42 | 7.4 | 60 | 0.4 | | |
| Arizona State | Pac 12 | 3 | 4 | 43 | 7.0 | 57 | 1.3 | | |
| Bowling Green State | Mid-American | 6 | 2 | 44 | 6.8 | 38 | 6.3 | | |
| Washington State | Pac 12 | 5 | 2 | 45 | 6.5 | 27 | 9.6 | | |
| Toledo | Mid-American | 7 | 0 | 46 | 6.4 | 17 | 14.2 | 24 | 20 |
| Penn State | Big Ten | 7 | 2 | 47 | 6.4 | 25 | 10.0 | | |
| Nebraska | Big Ten | 3 | 6 | 48 | 6.1 | 83 | -4.3 | | |
| Temple | American Athletic | 7 | 1 | 49 | 5.9 | 18 | 13.0 | 22 | 23 |
| Western Kentucky | Conference USA | 7 | 2 | 50 | 5.8 | 36 | 8.1 | | |
| Miami (Fla.) | ACC | 4 | 3 | 51 | 5.2 | 41 | 4.7 | | |
| Navy | American Athletic | 5 | 1 | 52 | 5.1 | 22 | 10.5 | | |
| Utah State | Mountain West | 4 | 3 | 53 | 4.5 | 53 | 1.8 | | |
| Cincinnati | American Athletic | 4 | 3 | 54 | 4.3 | 49 | 2.9 | | |
| Missouri | SEC | 3 | 4 | 55 | 4.1 | 71 | -1.1 | | |
| Appalachian State | Sun Belt | 6 | 1 | 56 | 4.1 | 24 | 10.1 | | |
| Kansas State | Big 12 | 2 | 4 | 57 | 3.9 | 69 | -1.1 | | |
| Louisiana Tech | Conference USA | 5 | 3 | 58 | 3.7 | 54 | 1.8 | | |
| Northwestern | Big Ten | 5 | 2 | 59 | 3.5 | 20 | 12.1 | 21 | |
| Texas | Big 12 | 3 | 5 | 60 | 3.2 | 50 | 2.4 | | |
| South Carolina | SEC | 3 | 5 | 61 | 2.7 | 77 | -2.1 | | |
| Boston College | ACC | 1 | 6 | 62 | 1.4 | 111 | -12.8 | | |
| Kentucky | SEC | 3 | 4 | 63 | 1.3 | 76 | -1.5 | | |
| Virginia | ACC | 2 | 5 | 64 | 1.0 | 78 | -3.1 | | |
| Iowa State | Big 12 | 2 | 5 | 65 | 0.3 | 68 | -1.0 | | |
| Northern Illinois | Mid-American | 4 | 3 | 66 | 0.3 | 84 | -4.8 | | |
| East Carolina | American Athletic | 3 | 5 | 67 | 0.2 | 74 | -1.3 | | |
| Arizona | Pac 12 | 4 | 4 | 68 | 0.2 | 62 | -0.4 | | |
| South Florida | American Athletic | 3 | 4 | 69 | 0.2 | 72 | -1.2 | | |
| Central Michigan | Mid-American | 4 | 4 | 70 | 0.0 | 58 | 0.8 | | |
| San Diego State | Mountain West | 5 | 3 | 71 | 0.0 | 56 | 1.3 | | |
| Vanderbilt | SEC | 2 | 5 | 72 | -0.7 | 81 | -4.0 | | |
| Indiana | Big Ten | 3 | 4 | 73 | -1.1 | 59 | 0.6 | | |
| Air Force | Mountain West | 4 | 3 | 74 | -1.2 | 73 | -1.3 | | |
| Western Michigan | Mid-American | 4 | 3 | 75 | -1.5 | 42 | 4.2 | | |
| Minnesota | Big Ten | 4 | 4 | 76 | -1.7 | 61 | -0.4 | | |
| Syracuse | ACC | 2 | 5 | 77 | -1.7 | 85 | -5.0 | | |
| Marshall | Conference USA | 7 | 1 | 78 | -1.9 | 39 | 6.2 | | |
| Illinois | Big Ten | 3 | 4 | 79 | -2.0 | 64 | -0.4 | | |
| Maryland | Big Ten | 1 | 6 | 80 | -2.4 | 87 | -5.9 | | |
| Georgia Southern | Sun Belt | 5 | 2 | 81 | -3.0 | 44 | 3.7 | | |
| Colorado | Pac 12 | 3 | 5 | 82 | -4.0 | 90 | -7.3 | | |
| Connecticut | American Athletic | 3 | 5 | 83 | -4.6 | 88 | -6.0 | | |
| Southern Mississippi | Conference USA | 5 | 3 | 84 | -4.7 | 75 | -1.4 | | |
| Wake Forest | ACC | 2 | 6 | 85 | -5.2 | 100 | -10.0 | | |
| Purdue | Big Ten | 1 | 6 | 86 | -5.3 | 104 | -10.5 | | |
| Middle Tennessee State | Conference USA | 2 | 5 | 87 | -5.5 | 94 | -8.7 | | |
| Rutgers | Big Ten | 2 | 5 | 88 | -6.1 | 70 | -1.1 | | |
| Oregon State | Pac 12 | 1 | 6 | 89 | -6.4 | 99 | -9.7 | | |
| Tulsa | American Athletic | 4 | 4 | 90 | -6.4 | 66 | -0.6 | | |
| Colorado State | Mountain West | 2 | 5 | 91 | -8.9 | 96 | -9.3 | | |
| Florida International | Conference USA | 3 | 5 | 92 | -9.7 | 106 | -11.2 | | |
| Buffalo | Mid-American | 3 | 4 | 93 | -9.9 | 86 | -5.4 | | |
| Arkansas State | Sun Belt | 4 | 3 | 94 | -10.1 | 63 | -0.4 | | |
| Ohio U. | Mid-American | 4 | 3 | 95 | -10.6 | 67 | -0.7 | | |
| San Jose State | Mountain West | 3 | 4 | 96 | -11.2 | 89 | -6.8 | | |
| Troy | Sun Belt | 1 | 6 | 97 | -11.3 | 120 | -15.0 | | |
| Akron | Mid-American | 2 | 5 | 98 | -11.3 | 92 | -7.7 | | |
| Nevada | Mountain West | 3 | 4 | 99 | -11.4 | 95 | -9.1 | | |
| Army | Independent | 1 | 5 | 100 | -12.2 | 118 | -14.4 | | |
| Ball State | Mid-American | 2 | 6 | 101 | -12.4 | 107 | -11.6 | | |
| Southern Methodist | American Athletic | 1 | 6 | 102 | -12.9 | 109 | -11.9 | | |
| Louisiana-Lafayette | Sun Belt | 2 | 4 | 103 | -13.4 | 101 | -10.3 | | |
| Nevada-Las Vegas | Mountain West | 1 | 6 | 104 | -14.0 | 112 | -12.8 | | |
| Rice | Conference USA | 3 | 4 | 105 | -14.6 | 82 | -4.1 | | |
| Massachusetts | Mid-American | 1 | 7 | 106 | -15.8 | 119 | -14.5 | | |
| Texas-San Antonio | Conference USA | 1 | 7 | 107 | -16.3 | 122 | -15.7 | | |
| Florida Atlantic | Conference USA | 2 | 6 | 108 | -16.6 | 113 | -13.1 | | |
| Wyoming | Mountain West | 1 | 7 | 109 | -16.6 | 123 | -16.9 | | |
| Central Florida | American Athletic | 0 | 8 | 110 | -16.8 | 128 | -20.5 | | |
| New Mexico | Mountain West | 3 | 4 | 111 | -17.6 | 98 | -9.4 | | |
| Texas State | Sun Belt | 1 | 5 | 112 | -17.8 | 103 | -10.5 | | |
| Kansas | Big 12 | 0 | 7 | 113 | -18.2 | 115 | -13.5 | | |
| Tulane | American Athletic | 1 | 6 | 114 | -18.5 | 102 | -10.5 | | |
| Hawaii | Mountain West | 1 | 7 | 115 | -19.2 | 116 | -13.5 | | |
| South Alabama | Sun Belt | 2 | 4 | 116 | -19.4 | 91 | -7.3 | | |
| Fresno State | Mountain West | 1 | 6 | 117 | -19.8 | 108 | -11.8 | | |
| Louisiana-Monroe | Sun Belt | 0 | 7 | 118 | -20.6 | 124 | -17.9 | | |
| Kent State | Mid-American | 2 | 5 | 119 | -20.8 | 93 | -8.1 | | |
| Idaho | Sun Belt | 2 | 5 | 120 | -21.5 | 110 | -12.2 | | |
| Georgia State | Sun Belt | 2 | 4 | 121 | -22.2 | 97 | -9.3 | | |
| North Texas | Conference USA | 1 | 6 | 122 | -22.8 | 117 | -14.1 | | |
| Miami (Ohio) | Mid-American | 0 | 8 | 123 | -24.0 | 125 | -19.4 | | |
| Eastern Michigan | Mid-American | 1 | 8 | 124 | -24.6 | 127 | -20.1 | | |
| Texas-El Paso | Conference USA | 2 | 5 | 125 | -24.9 | 114 | -13.2 | | |
| Old Dominion | Conference USA | 2 | 5 | 126 | -24.9 | 105 | -10.7 | | |
| New Mexico State | Sun Belt | 1 | 7 | 127 | -28.5 | 126 | -19.4 | | |
| North Carolina-Charlotte | Conference USA | 1 | 6 | 128 | -31.6 | 121 | -15.2 | | |
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.
