I've said it in Numbersense (the chapter on school rankings), and here it happens again.
According to the New York Times (link), Harvard Law School decided to allow applicants to submit GRE test scores instead of LSAT test scores. The announced purpose is to "encourage more students in the United States and internationally from a greater degree of disciplines to apply".
The school has a fixed cohort size, 560 per class, according to the article. It rejects 84 out of every 100 applicants (profile data here). Three quarters of those apply had GPA over 3.76 and one out of four applicants had GPA over 3.94. By making it easier for more people apply, selectivity is enhanced by expanding the base while fixing the numerator of the ratio.