| 2015 College Football Ratings Summary |
| College |
Conference |
W |
L |
P-Rank |
P-Rating |
R-Rank |
R-Rating |
CFP Rank |
AP Rank |
| New Mexico State | Sun Belt | 0 | 4 | 126 | -25.0 | 128 | -19.7 | | |
| Wyoming | Mountain West | 0 | 4 | 120 | -20.5 | 127 | -19.1 | | |
| Central Florida | American Athletic | 0 | 4 | 93 | -8.4 | 126 | -16.3 | | |
| North Texas | Conference USA | 0 | 4 | 127 | -26.0 | 125 | -16.1 | | |
| Eastern Michigan | Mid-American | 1 | 4 | 119 | -18.7 | 124 | -15.0 | | |
| Purdue | Big Ten | 0 | 4 | 89 | -6.9 | 123 | -14.8 | | |
| Fresno State | Mountain West | 0 | 4 | 114 | -17.2 | 122 | -14.0 | | |
| Miami (Ohio) | Mid-American | 0 | 4 | 121 | -21.7 | 121 | -13.7 | | |
| Louisiana-Lafayette | Sun Belt | 0 | 3 | 103 | -13.3 | 120 | -13.3 | | |
| Idaho | Sun Belt | 0 | 4 | 124 | -23.4 | 119 | -13.2 | | |
| Troy | Sun Belt | 0 | 3 | 116 | -17.5 | 118 | -12.8 | | |
| Kansas | Big 12 | 0 | 3 | 105 | -13.9 | 117 | -11.8 | | |
| Texas-El Paso | Conference USA | 1 | 3 | 123 | -23.3 | 116 | -11.6 | | |
| Texas State | Sun Belt | 0 | 3 | 115 | -17.5 | 115 | -11.1 | | |
| South Florida | American Athletic | 0 | 3 | 88 | -6.8 | 114 | -10.6 | | |
| Virginia | ACC | 0 | 3 | 71 | -1.7 | 113 | -10.2 | | |
| 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-San Antonio | Conference USA | 1 | 4 | 109 | -15.0 | 109 | -9.7 | | |
| Florida Atlantic | Conference USA | 1 | 3 | 111 | -15.2 | 110 | -9.7 | | |
| Louisiana-Monroe | Sun Belt | 0 | 3 | 108 | -14.7 | 108 | -9.6 | | |
| Buffalo | Mid-American | 1 | 3 | 99 | -10.0 | 106 | -9.4 | | |
| Army | Independent | 1 | 3 | 91 | -7.1 | 107 | -9.4 | | |
| San Jose State | Mountain West | 1 | 3 | 94 | -8.8 | 105 | -8.7 | | |
| Middle Tennessee State | Conference USA | 1 | 3 | 62 | 1.2 | 104 | -8.5 | | |
| Tulane | American Athletic | 1 | 2 | 113 | -16.7 | 103 | -8.4 | | |
| San Diego State | Mountain West | 1 | 3 | 101 | -11.3 | 101 | -8.2 | | |
| Nevada | Mountain West | 1 | 3 | 97 | -9.8 | 102 | -8.2 | | |
| Old Dominion | Conference USA | 1 | 3 | 122 | -22.5 | 100 | -8.0 | | |
| Colorado State | Mountain West | 1 | 3 | 92 | -7.5 | 99 | -7.8 | | |
| Maryland | Big Ten | 1 | 3 | 90 | -6.9 | 98 | -7.7 | | |
| Florida International | Conference USA | 1 | 3 | 96 | -9.4 | 97 | -7.6 | | |
| Kent State | Mid-American | 1 | 3 | 118 | -18.2 | 96 | -7.5 | | |
| Western Michigan | Mid-American | 0 | 3 | 98 | -9.9 | 95 | -7.3 | | |
| Southern Methodist | American Athletic | 1 | 3 | 104 | -13.5 | 94 | -7.0 | | |
| Rice | Conference USA | 1 | 3 | 112 | -15.6 | 93 | -6.7 | | |
| Northern Illinois | Mid-American | 1 | 3 | 74 | -2.5 | 92 | -6.2 | | |
| Georgia Tech | ACC | 1 | 3 | 28 | 10.7 | 91 | -6.1 | | |
| Arkansas State | Sun Belt | 1 | 3 | 102 | -12.2 | 90 | -5.7 | | |
| 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 | | |
| New Mexico | Mountain West | 2 | 2 | 110 | -15.1 | 86 | -5.4 | | |
| Virginia Tech | ACC | 1 | 3 | 46 | 7.0 | 85 | -5.3 | | |
| Akron | Mid-American | 1 | 3 | 95 | -9.4 | 84 | -5.2 | | |
| Vanderbilt | SEC | 1 | 3 | 56 | 3.1 | 82 | -4.7 | | |
| Connecticut | American Athletic | 1 | 3 | 86 | -6.6 | 83 | -4.7 | | |
| Wake Forest | ACC | 1 | 3 | 78 | -3.1 | 81 | -4.4 | | |
| Texas | Big 12 | 1 | 4 | 70 | -1.1 | 80 | -4.1 | | |
| Southern Mississippi | Conference USA | 2 | 2 | 83 | -5.1 | 79 | -3.8 | | |
| Central Michigan | Mid-American | 1 | 3 | 80 | -4.3 | 78 | -3.5 | | |
| Hawaii | Mountain West | 1 | 3 | 107 | -14.6 | 76 | -3.4 | | |
| Tennessee | SEC | 1 | 3 | 22 | 14.2 | 77 | -3.4 | | |
| Utah State | Mountain West | 1 | 2 | 66 | -0.1 | 75 | -3.3 | | |
| Colorado | Pac 12 | 2 | 2 | 79 | -3.7 | 74 | -3.2 | | |
| South Alabama | Sun Belt | 2 | 2 | 117 | -17.7 | 72 | -2.6 | | |
| Boston College | ACC | 1 | 2 | 61 | 2.2 | 73 | -2.6 | | |
| Nebraska | Big Ten | 2 | 3 | 41 | 8.1 | 71 | -2.5 | | |
| Oregon State | Pac 12 | 1 | 2 | 67 | -0.3 | 70 | -2.4 | | |
| Iowa State | Big 12 | 1 | 2 | 69 | -0.4 | 69 | -2.1 | | |
| Ball State | Mid-American | 1 | 3 | 87 | -6.8 | 68 | -1.9 | | |
| Arkansas | SEC | 2 | 3 | 35 | 9.2 | 67 | -1.7 | | |
| Washington | Pac 12 | 1 | 2 | 30 | 10.0 | 66 | -1.6 | | |
| Louisville | ACC | 1 | 3 | 34 | 9.3 | 65 | -1.5 | | |
| South Carolina | SEC | 2 | 3 | 54 | 4.3 | 63 | -1.2 | | |
| Louisiana Tech | Conference USA | 2 | 2 | 53 | 4.5 | 64 | -1.2 | | |
| Air Force | Mountain West | 1 | 2 | 82 | -4.9 | 62 | -0.8 | | |
| Arizona | Pac 12 | 2 | 2 | 64 | 0.5 | 61 | 0.2 | | |
| Bowling Green State | Mid-American | 3 | 2 | 73 | -2.5 | 60 | 0.4 | | |
| Wisconsin | Big Ten | 3 | 2 | 26 | 11.3 | 59 | 0.5 | | |
| Auburn | SEC | 2 | 2 | 33 | 9.7 | 58 | 1.2 | | |
| Tulsa | American Athletic | 2 | 2 | 84 | -5.1 | 57 | 2.1 | | |
| Texas Tech | Big 12 | 2 | 2 | 31 | 9.8 | 55 | 2.4 | | |
| North Carolina State | ACC | 3 | 1 | 36 | 9.1 | 56 | 2.4 | | |
| Oregon | Pac 12 | 2 | 2 | 43 | 7.8 | 54 | 2.8 | | |
| North Carolina | ACC | 2 | 1 | 24 | 12.4 | 53 | 2.9 | | |
| Miami (Fla.) | ACC | 2 | 1 | 44 | 7.4 | 52 | 3.0 | | |
| Cincinnati | American Athletic | 2 | 2 | 68 | -0.3 | 51 | 3.2 | | |
| Illinois | Big Ten | 3 | 1 | 60 | 2.3 | 50 | 3.3 | | |
| Appalachian State | Sun Belt | 2 | 1 | 75 | -2.8 | 49 | 3.7 | | |
| Syracuse | ACC | 2 | 1 | 65 | 0.4 | 48 | 3.9 | | |
| East Carolina | American Athletic | 2 | 2 | 57 | 3.0 | 46 | 4.0 | | |
| Marshall | Conference USA | 3 | 1 | 72 | -2.1 | 47 | 4.0 | | |
| Arizona State | Pac 12 | 2 | 2 | 37 | 9.1 | 45 | 4.2 | | |
| Washington State | Pac 12 | 2 | 1 | 63 | 0.9 | 44 | 4.3 | | |
| Georgia Southern | Sun Belt | 3 | 1 | 77 | -3.0 | 43 | 4.4 | | |
| Georgia | SEC | 3 | 1 | 6 | 18.5 | 42 | 4.8 | | 19 |
| Boise State | Mountain West | 3 | 1 | 17 | 16.5 | 41 | 5.5 | | 25 |
| Kansas State | Big 12 | 2 | 1 | 25 | 11.5 | 40 | 5.6 | | |
| Brigham Young | Independent | 3 | 2 | 42 | 8.1 | 38 | 6.0 | | |
| Penn State | Big Ten | 4 | 1 | 59 | 2.4 | 39 | 6.0 | | |
| West Virginia | Big 12 | 2 | 1 | 8 | 17.7 | 37 | 6.1 | | |
| Duke | ACC | 3 | 1 | 45 | 7.4 | 36 | 6.3 | | |
| Mississippi State | SEC | 2 | 2 | 20 | 14.8 | 35 | 6.4 | | |
| Minnesota | Big Ten | 3 | 2 | 76 | -2.8 | 34 | 6.5 | | |
| Missouri | SEC | 3 | 1 | 51 | 5.3 | 33 | 6.7 | | |
| USC | Pac 12 | 3 | 1 | 3 | 23.0 | 32 | 6.8 | | 17 |
| Ohio U. | Mid-American | 3 | 1 | 85 | -5.2 | 31 | 7.0 | | |
| Pittsburgh | ACC | 2 | 1 | 38 | 9.0 | 30 | 7.4 | | |
| Notre Dame | Independent | 4 | 1 | 16 | 16.8 | 29 | 7.5 | | 15 |
| UCLA | Pac 12 | 4 | 1 | 21 | 14.3 | 28 | 7.6 | | 20 |
| Western Kentucky | Conference USA | 4 | 1 | 47 | 6.9 | 27 | 7.8 | | |
| Indiana | Big Ten | 3 | 1 | 55 | 3.9 | 26 | 8.2 | | |
| Kentucky | SEC | 3 | 1 | 52 | 5.2 | 24 | 8.7 | | |
| Alabama | SEC | 4 | 1 | 2 | 25.0 | 25 | 8.7 | | 8 |
| Michigan | Big Ten | 4 | 1 | 14 | 17.1 | 23 | 10.0 | | 18 |
| Mississippi | SEC | 3 | 1 | 12 | 17.4 | 22 | 10.8 | | 14 |
| Baylor | Big 12 | 3 | 0 | 1 | 25.5 | 21 | 11.5 | | 3 |
| Florida State | ACC | 4 | 0 | 19 | 16.0 | 20 | 11.6 | | 12 |
| Navy | American Athletic | 3 | 0 | 49 | 5.7 | 19 | 12.2 | | |
| Michigan State | Big Ten | 5 | 0 | 40 | 8.3 | 18 | 12.6 | | 4 |
| Stanford | Pac 12 | 4 | 1 | 5 | 19.3 | 17 | 12.7 | | 16 |
| Houston | American Athletic | 3 | 0 | 32 | 9.7 | 16 | 13.1 | | |
| Memphis | American Athletic | 4 | 0 | 50 | 5.3 | 14 | 13.5 | | |
| Toledo | Mid-American | 4 | 0 | 48 | 5.7 | 15 | 13.5 | | 24 |
| Oklahoma State | Big 12 | 4 | 0 | 23 | 12.8 | 13 | 13.7 | | 21 |
| California | Pac 12 | 4 | 0 | 39 | 8.7 | 12 | 13.8 | | 23 |
| Oklahoma | Big 12 | 4 | 0 | 4 | 20.4 | 11 | 13.9 | | 10 |
| Clemson | ACC | 3 | 0 | 10 | 17.6 | 10 | 14.3 | | 6 |
| Iowa | Big Ten | 4 | 0 | 27 | 11.2 | 9 | 15.0 | | 22 |
| Utah | Pac 12 | 4 | 0 | 13 | 17.3 | 7 | 15.2 | | 5 |
| Texas A&M | SEC | 5 | 0 | 7 | 18.0 | 8 | 15.2 | | 9 |
| Temple | American Athletic | 4 | 0 | 58 | 2.9 | 6 | 15.3 | | |
| Ohio State | Big Ten | 5 | 0 | 9 | 17.7 | 5 | 15.5 | | 1 |
| Texas Christian | Big 12 | 4 | 0 | 15 | 16.8 | 4 | 16.0 | | 2 |
| LSU | SEC | 4 | 0 | 18 | 16.4 | 3 | 16.5 | | 7 |
| Florida | SEC | 5 | 0 | 11 | 17.5 | 2 | 17.8 | | 11 |
| Northwestern | Big Ten | 4 | 0 | 29 | 10.3 | 1 | 18.0 | | 13 |
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.
