@Juliette, perhaps I didn’t express the second part clearly, because your response doesn’t align with what I meant. What I was saying is someone who tests well on standardized tests will do so regardless of where they go to college. So the LSAT will not be impacted by college choice. The other part of the equation, though, is undergraduate record. All I am saying is most successful applicants to top level law schools will have both high LSATs AND high GPAs. I think the same GPA from a higher ranked school will carry more weight in the decision than from a lower ranked school. And, since many high ranked schools actually have high average GPAs, they aren’t a bad bet.
WildestDream has a point that they do look for some diversity, so that may be a countervailing factor, I still think higher ranked is generally the better bet assuming it is a good fit for you and you do well.