Big 12:
- Texas - #45
- Texas A&M - #58
- Baylor - #75
- Missouri - #90
- Iowa State - #97
- Kansas - #101
- Oklahoma - #101
- Oklahoma State - #132
- Kansas State - #143
- Texas Tech - #160
SEC:
- Vanderbilt - #17
- Florida - #58
- Georgia - #62
- Alabama - #75
- Auburn - #82
- Tennessee - #101
- South Carolina - #111
- Kentucky - #124
- Louisiana State - #128
- Arkansas - #132
- Mississippi - #143
- Mississippi State - #157
Big 12 Avg. = 100.2 Big 12 Avg. w/o TAMU = 104.9
SEC Avg. = 99.17 SEC Avg. w/TAMU = 96
Those averages are kind of flawed because of a couple of outliers (Vanderbilt, Texas Tech, Mississippi State). The averages with those taken out turn slightly in favor of the Big 12, but it's still not very much of a difference. We'll take Texas A&M (since we're already leaving) and Texas Tech out of the Big 12 rankings, and Vanderbilt and Mississippi State out of the SEC rankings...
Big 12 Avg. = 98
SEC Avg. = 101.6
According to the rankings, The ACC and Big Ten are by far the top academic conferences. (If academics play as big of a part for Texas as you say, maybe that's why we've heard those rumors about Texas wanting to go to the Big Ten last year, and the ACC this year.)
The Pac-12 would be a distant third behind the ACC and the Big Ten, but ahead of the Big 12, SEC, and Big East. The Big East (for football only schools) is maybe the worst, with the SEC and Big 12 being virtually interchangeable.