It's odd, because sometimes teams from very remote conferences place first in their conference and go into the NCAA tournament, and also some teams that do really bad overall and are like 5th or 6th in their conference get into the NCAA while some teams that are pretty good but don't have a tough schedule don't get into the NCAA.
For this reason, NIT isn't really who gets 65th, but more of a consolation prize for those that got bumped out unfairly of the NCAA... i.e. Texas Tech might not get in, but Troy State (from the Atlantic Sun conference... yeah i know Atlantic Sun? wtf is that?) will get in because they placed first in their conference.