outside the top 25, or more realistically, even the top 15, these rankings don't really matter because no one really cares if you went to #43 ranked school vs #78 because no one can tell the difference or knows the difference. as scooch mentioned earlier, you can only generalize these schools (outside the top 20 or 15) by bucketing them together
what benefit does it even bring to the school? is duke complaining the nc state is bringing down their #8 ranking because NC State is #100+? i get there might be a benefit of moving to a good athletic conference since more students will want to now go there and the selectivity goes up. on the other hand, the ivy leagues seem to be doing alright without national athletic powers, so is Chicago and the rest of the University Athletic Association (the conference Chicago is in btw)