it would be for conferences to do this, but over the years, they actually kept the correct number of schools in their conference name to match the actual number of schools in their conference.
They were the only one of the three major conferences with the number of schools in their name to do so. So, apparently, it is much more difficult than it looks.
Good job, Pac8, Pac10, Pac12 and . . . . Pac2 (this is assuming they keep up their standard of excellence).