Some law schools assign accepted students with low incoming UG GPA/LSAT to the part-time program, which does not differ much from the full-time program (usually at most one course less per semester). US News only counts full-time GPA/LSAT scores. The article is available at http://online.wsj.com/article/SB121971712700771731.html?mod=googlenews_wsj

Note that HofsTTTra, which is clinging to its spot in the top 100, would likely be Tier 3 if US News counted all students' scores and GPA's, as it should. I turned down a scholarship at the Hof to go to my T3 in New England, despite wanting to practice in the NYC metro area. I graduated in May and am now interested in working in New England, as a last resort; it aggravates me that HofsTTTra has a better reputation (probably in general but definitely in the NYC metro area) than my New England T3.