I had another thought after I posted the above, which means I have to revise my conclusions.
To damp down the uncertainty... from LSAC's Repeater Data
, it appears that in 2008-2009, 283 people who got 170+ on a previous test repeated. So of those 4287-ish people who got 170's, about 4000 of those were new test-takers. This, on further thought, makes more sense anyway: only a small fraction of people who score 170 or above decide to retake anyway. Thus, we're talking 4000 actual people who got 170 or above, some of whom scored that twice.
So in reality, we're probably talking about 2500 matriculants to the t14 or so out of 4000 people who scored 170 or above on the LSAT. That's less drastic than I thought. I wonder about the other 1500, give or take, who don't
go to top schools. I guess they're getting money at regional/local schools. As noted in the original post, there's good reason to think that at least some people with 170+ are going to schools ranked all the way down to 35 or 40, which means that about 25 schools are battling over about 1500 people -- which would still be 60 people per school, so that might not be right, since it would likely affect 75th percentiles. Maybe an average of 40 per school or something, accounting for 1000 of them, and then the remaining bunch go to schools below the top 40 or don't go to law school at all? At this point I'm just speculating.
EDIT: As to the 180 question, search on LSN for people like this
. This guy is a 180/3.0 who got into GW. I suspect that the 180 doesn't do much more than a 170 or so would; you could run some LSAC simulations to see what it says. Might push you from GW to Vanderbilt or something like that.