Several years ago, institutions within the Virginia Community College System implemented changes to placement testing and dev ed. In 2012 and 2013, new placement exams in math and English, respectively, were implemented. The new exams were coupled with redesigned dev ed math and English courses. Math courses were shortened to four-week sessions and an English course for those on-the-bubble incorporated a co-requisite approach. Research has since indicated that fewer students are referred to dev ed and students considered college-ready in math within a year increased from 5% to 18%.
Source: The Washington Post