I've been told that Harvard Law is pass/fail, so you can be a crappy student (as long as you can get in) and still get a degree. Thus, firms that focus on top-tire schools get lots of bad lawyers who went to the right schools.

I sort of see top-tire schools like I see fake doctors wearing lab coats, if you want a lazy signal go for it, but it shouldn't be more than an ok and move on.