The ABA Journal published an interesting article written by Debra Cassens Weiss which can be read here. Jerry Organ, a law professor at the University of St. Thomas School of Law found that the law school class of 2018 has lower LSAT profiles than recent graduating classes. Accepting the correlation between lower LSAT scores and decreased bar-pass rates, the trend is that bar exam scores are going to decline at least through 2018.
Professor Organ did highlight that the LSAT profiles for incoming law school graduates for 2016 appear to be higher, hopefully reversing the downward trend for bar passage. If that is the case, then the class of 2018 will represent the lowest point for bar-pass rates.