Most business school rankings are pretty volatile, but the 2018 Bloomberg Businessweek list has to set a new standard. Some 33 of the 84 schools, or nearly 40%, that appear on both this year’s and last year’s lists experienced double-digit gains or falls. That compares to a mere six schools with double-digit changes last year and just 18 in 2016. Here are the 16 that plunged this year.