up to and including the morning of. I never understood the taking a break thing.
I stopped studying 2 days before. I took the day before off. Lots of people seem to take the last week off, though, to "keep fresh." Whatever that means. Do what you gotta do.
who was it who said to take a test you've already taken the day before? That's what i plan to do--go through the process and the thinking of the LSAT, but not get freaked about how I'm scoring the day before.
Another piece of advice I've read, though not particularly related to the last day of studying, is to read everything you're given during that hour or so before the test begins (for June 11th, I mean the time from 12pm-1pm). People have suggested this to keep you sharp and on your game. I think it's something I'll try to do.