| 2015 College Football Ratings Summary |
| College |
Conference |
W |
L |
P-Rank |
P-Rating |
R-Rank |
R-Rating |
CFP Rank |
AP Rank |
| Ohio State | Big Ten | 9 | 0 | 5 | 20.3 | 5 | 18.6 | 3 | 2 |
| Iowa | Big Ten | 8 | 0 | 22 | 13.4 | 1 | 22.7 | 5 | 8 |
| Clemson | ACC | 8 | 0 | 3 | 24.9 | 2 | 22.7 | 1 | 1 |
| Oklahoma State | Big 12 | 8 | 0 | 10 | 18.9 | 3 | 21.5 | 8 | 5 |
| Notre Dame | Independent | 8 | 1 | 6 | 19.6 | 4 | 20.9 | 4 | 6 |
| Stanford | Pac 12 | 8 | 1 | 8 | 19.2 | 7 | 17.6 | 7 | 7 |
| Alabama | SEC | 8 | 1 | 4 | 23.2 | 8 | 17.5 | 2 | 3 |
| Florida | SEC | 8 | 1 | 14 | 17.4 | 10 | 16.4 | 11 | 11 |
| Utah | Pac 12 | 8 | 1 | 17 | 15.8 | 12 | 16.2 | 10 | 10 |
| Houston | American Athletic | 8 | 0 | 21 | 13.9 | 13 | 15.9 | 24 | 16 |
| Michigan State | Big Ten | 8 | 1 | 27 | 12.5 | 16 | 14.9 | 13 | 14 |
| Temple | American Athletic | 8 | 1 | 46 | 6.4 | 18 | 13.2 | 22 | 21 |
| Oklahoma | Big 12 | 8 | 1 | 1 | 26.2 | 20 | 12.2 | 12 | 12 |
| Wisconsin | Big Ten | 8 | 2 | 26 | 12.6 | 21 | 10.8 | 25 | 23 |
| Western Kentucky | Conference USA | 8 | 2 | 50 | 5.4 | 30 | 8.0 | | |
| LSU | SEC | 7 | 1 | 12 | 17.7 | 6 | 18.0 | 9 | 9 |
| Texas Christian | Big 12 | 7 | 1 | 9 | 19.0 | 9 | 16.5 | 15 | 13 |
| Baylor | Big 12 | 7 | 0 | 2 | 25.6 | 14 | 15.8 | 6 | 4 |
| Memphis | American Athletic | 7 | 1 | 40 | 8.1 | 15 | 15.4 | 21 | 25 |
| Michigan | Big Ten | 7 | 2 | 16 | 16.6 | 19 | 12.4 | 14 | 15 |
| UCLA | Pac 12 | 7 | 2 | 20 | 14.0 | 28 | 9.2 | 19 | 18 |
| Penn State | Big Ten | 7 | 3 | 47 | 6.4 | 29 | 8.8 | | |
| Florida State | ACC | 7 | 2 | 18 | 15.6 | 31 | 8.0 | 16 | 19 |
| Toledo | Mid-American | 7 | 1 | 54 | 4.9 | 32 | 7.8 | | |
| Bowling Green State | Mid-American | 7 | 2 | 42 | 7.6 | 36 | 7.0 | | |
| Marshall | Conference USA | 7 | 2 | 79 | -2.3 | 55 | 2.1 | | |
| Navy | American Athletic | 6 | 1 | 36 | 8.6 | 11 | 16.2 | 20 | 22 |
| Northwestern | Big Ten | 6 | 2 | 59 | 3.4 | 17 | 14.1 | 18 | 24 |
| Mississippi State | SEC | 6 | 2 | 13 | 17.4 | 22 | 10.7 | 17 | 20 |
| Mississippi | SEC | 6 | 3 | 19 | 15.5 | 23 | 10.5 | | |
| Washington State | Pac 12 | 6 | 2 | 43 | 7.4 | 24 | 10.3 | | |
| Brigham Young | Independent | 6 | 2 | 44 | 6.5 | 25 | 10.2 | | |
| USC | Pac 12 | 6 | 3 | 7 | 19.6 | 26 | 9.9 | | |
| North Carolina | ACC | 6 | 1 | 15 | 17.2 | 27 | 9.7 | 23 | 17 |
| Texas A&M | SEC | 6 | 3 | 31 | 10.8 | 35 | 7.0 | | |
| Boise State | Mountain West | 6 | 2 | 28 | 12.3 | 39 | 5.4 | | |
| Appalachian State | Sun Belt | 6 | 2 | 65 | 1.3 | 45 | 4.6 | | |
| Louisiana Tech | Conference USA | 6 | 3 | 55 | 4.7 | 53 | 2.2 | | |
| Oregon | Pac 12 | 5 | 3 | 29 | 10.9 | 33 | 7.8 | | |
| Pittsburgh | ACC | 5 | 3 | 38 | 8.3 | 34 | 7.5 | | |
| Miami (Fla.) | ACC | 5 | 3 | 53 | 5.0 | 38 | 5.8 | | |
| Georgia | SEC | 5 | 3 | 23 | 13.2 | 42 | 4.9 | | |
| Western Michigan | Mid-American | 5 | 3 | 67 | 1.2 | 46 | 3.8 | | |
| Georgia Southern | Sun Belt | 5 | 2 | 81 | -3.4 | 47 | 3.0 | | |
| Arkansas State | Sun Belt | 5 | 3 | 89 | -7.6 | 49 | 2.9 | | |
| Duke | ACC | 5 | 3 | 48 | 6.2 | 52 | 2.4 | | |
| North Carolina State | ACC | 5 | 3 | 34 | 10.0 | 58 | 1.5 | | |
| San Diego State | Mountain West | 5 | 3 | 72 | -0.2 | 61 | 0.8 | | |
| Northern Illinois | Mid-American | 5 | 3 | 64 | 1.3 | 62 | 0.7 | | |
| Tulsa | American Athletic | 5 | 4 | 87 | -6.8 | 67 | -0.6 | | |
| Air Force | Mountain West | 5 | 3 | 74 | -0.7 | 68 | -1.0 | | |
| Southern Mississippi | Conference USA | 5 | 3 | 84 | -4.9 | 72 | -1.7 | | |
| California | Pac 12 | 4 | 4 | 33 | 10.1 | 37 | 6.8 | | |
| Tennessee | SEC | 4 | 4 | 11 | 17.9 | 40 | 5.3 | | |
| Auburn | SEC | 4 | 4 | 30 | 10.8 | 41 | 5.2 | | |
| Arkansas | SEC | 4 | 4 | 32 | 10.7 | 43 | 4.8 | | |
| Texas Tech | Big 12 | 4 | 5 | 39 | 8.2 | 48 | 3.0 | | |
| Cincinnati | American Athletic | 4 | 4 | 52 | 5.0 | 50 | 2.7 | | |
| Louisville | ACC | 4 | 4 | 37 | 8.6 | 51 | 2.5 | | |
| Texas | Big 12 | 4 | 5 | 57 | 4.3 | 54 | 2.2 | | |
| Illinois | Big Ten | 4 | 4 | 62 | 1.6 | 56 | 2.1 | | |
| Central Michigan | Mid-American | 4 | 4 | 71 | 0.1 | 59 | 1.5 | | |
| South Florida | American Athletic | 4 | 4 | 68 | 0.8 | 60 | 1.4 | | |
| Nebraska | Big Ten | 4 | 6 | 45 | 6.4 | 64 | -0.2 | | |
| Minnesota | Big Ten | 4 | 5 | 76 | -1.0 | 66 | -0.3 | | |
| Arizona | Pac 12 | 4 | 5 | 63 | 1.5 | 69 | -1.1 | | |
| Ohio U. | Mid-American | 4 | 4 | 99 | -11.8 | 71 | -1.6 | | |
| Utah State | Mountain West | 4 | 4 | 60 | 2.5 | 73 | -1.7 | | |
| Buffalo | Mid-American | 4 | 4 | 96 | -10.1 | 79 | -3.1 | | |
| Connecticut | American Athletic | 4 | 5 | 86 | -5.0 | 83 | -4.0 | | |
| New Mexico | Mountain West | 4 | 4 | 106 | -15.7 | 91 | -6.6 | | |
| Nevada | Mountain West | 4 | 4 | 97 | -10.6 | 93 | -7.1 | | |
| Florida International | Conference USA | 4 | 5 | 95 | -9.9 | 99 | -9.8 | | |
| West Virginia | Big 12 | 3 | 4 | 25 | 12.8 | 44 | 4.6 | | |
| Washington | Pac 12 | 3 | 5 | 24 | 13.0 | 57 | 1.7 | | |
| Arizona State | Pac 12 | 3 | 5 | 49 | 6.2 | 63 | 0.7 | | |
| Indiana | Big Ten | 3 | 5 | 77 | -1.0 | 65 | -0.3 | | |
| Missouri | SEC | 3 | 5 | 58 | 3.7 | 70 | -1.5 | | |
| Kentucky | SEC | 3 | 5 | 69 | 0.5 | 74 | -1.8 | | |
| East Carolina | American Athletic | 3 | 6 | 73 | -0.6 | 78 | -3.0 | | |
| South Carolina | SEC | 3 | 6 | 56 | 4.3 | 80 | -3.1 | | |
| Virginia Tech | ACC | 3 | 5 | 41 | 7.9 | 81 | -3.4 | | |
| Middle Tennessee State | Conference USA | 3 | 5 | 82 | -4.5 | 86 | -4.7 | | |
| South Alabama | Sun Belt | 3 | 4 | 113 | -18.8 | 87 | -5.5 | | |
| Akron | Mid-American | 3 | 5 | 98 | -11.2 | 88 | -5.9 | | |
| Rice | Conference USA | 3 | 5 | 105 | -15.6 | 92 | -7.0 | | |
| San Jose State | Mountain West | 3 | 5 | 94 | -9.5 | 94 | -7.1 | | |
| Louisiana-Lafayette | Sun Belt | 3 | 4 | 102 | -14.0 | 95 | -7.6 | | |
| Colorado | Pac 12 | 3 | 6 | 85 | -4.9 | 96 | -8.0 | | |
| Colorado State | Mountain West | 3 | 5 | 90 | -7.9 | 97 | -8.5 | | |
| Old Dominion | Conference USA | 3 | 5 | 123 | -23.5 | 98 | -9.4 | | |
| Texas-El Paso | Conference USA | 3 | 5 | 124 | -23.7 | 101 | -10.2 | | |
| Kansas State | Big 12 | 2 | 5 | 51 | 5.3 | 75 | -2.2 | | |
| Rutgers | Big Ten | 2 | 6 | 88 | -7.0 | 76 | -2.2 | | |
| Iowa State | Big 12 | 2 | 6 | 75 | -0.9 | 77 | -2.5 | | |
| Vanderbilt | SEC | 2 | 6 | 66 | 1.3 | 82 | -3.8 | | |
| Virginia | ACC | 2 | 6 | 61 | 1.7 | 84 | -4.3 | | |
| Georgia Tech | ACC | 2 | 6 | 35 | 9.8 | 85 | -4.3 | | |
| Syracuse | ACC | 2 | 6 | 80 | -2.6 | 89 | -6.0 | | |
| Wake Forest | ACC | 2 | 6 | 83 | -4.8 | 100 | -10.0 | | |
| Nevada-Las Vegas | Mountain West | 2 | 6 | 100 | -12.4 | 103 | -10.8 | | |
| Kent State | Mid-American | 2 | 6 | 114 | -19.8 | 104 | -10.9 | | |
| Georgia State | Sun Belt | 2 | 5 | 120 | -21.8 | 106 | -12.0 | | |
| Idaho | Sun Belt | 2 | 6 | 119 | -21.4 | 107 | -12.4 | | |
| Troy | Sun Belt | 2 | 6 | 93 | -8.9 | 108 | -12.5 | | |
| Ball State | Mid-American | 2 | 7 | 104 | -15.4 | 111 | -12.9 | | |
| Florida Atlantic | Conference USA | 2 | 7 | 107 | -15.7 | 112 | -13.3 | | |
| New Mexico State | Sun Belt | 2 | 7 | 127 | -26.3 | 118 | -15.3 | | |
| Maryland | Big Ten | 1 | 7 | 78 | -1.9 | 90 | -6.2 | | |
| Oregon State | Pac 12 | 1 | 7 | 91 | -8.2 | 102 | -10.8 | | |
| Purdue | Big Ten | 1 | 7 | 92 | -8.3 | 105 | -11.3 | | |
| Southern Methodist | American Athletic | 1 | 7 | 103 | -14.0 | 109 | -12.6 | | |
| Boston College | ACC | 1 | 7 | 70 | 0.2 | 110 | -12.8 | | |
| Tulane | American Athletic | 1 | 7 | 112 | -18.1 | 113 | -13.5 | | |
| Texas State | Sun Belt | 1 | 6 | 117 | -20.4 | 114 | -14.3 | | |
| Fresno State | Mountain West | 1 | 7 | 118 | -20.5 | 115 | -14.6 | | |
| Hawaii | Mountain West | 1 | 8 | 116 | -20.0 | 116 | -14.7 | | |
| Army | Independent | 1 | 6 | 101 | -12.9 | 119 | -15.5 | | |
| North Texas | Conference USA | 1 | 7 | 125 | -24.3 | 120 | -15.6 | | |
| North Carolina-Charlotte | Conference USA | 1 | 7 | 128 | -30.4 | 121 | -16.7 | | |
| Miami (Ohio) | Mid-American | 1 | 8 | 121 | -22.8 | 122 | -16.7 | | |
| Massachusetts | Mid-American | 1 | 8 | 108 | -16.3 | 123 | -17.0 | | |
| Texas-San Antonio | Conference USA | 1 | 8 | 110 | -17.2 | 124 | -17.3 | | |
| Wyoming | Mountain West | 1 | 8 | 111 | -18.0 | 125 | -18.5 | | |
| Eastern Michigan | Mid-American | 1 | 9 | 126 | -25.5 | 128 | -21.7 | | |
| Kansas | Big 12 | 0 | 8 | 115 | -20.0 | 117 | -14.7 | | |
| Louisiana-Monroe | Sun Belt | 0 | 8 | 122 | -23.1 | 126 | -19.8 | | |
| Central Florida | American Athletic | 0 | 9 | 109 | -16.7 | 127 | -20.8 | | |
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.
