Some time this fall, the U.S. Education Department will publish a report that documents the death of tenure.
Innocuously titled "Employees in Postsecondary Institutions, Fall 2009," the report won't say it's about the demise of tenure. But that's what it will show.
Over just three decades, the proportion of college instructors who are tenured or on the tenure track plummeted: from 57 percent in 1975 to 31 percent in 2007. The new report is expected to show that that proportion fell even further in 2009. If you add graduate teaching assistants to the mix, those with some kind of tenure status represent a mere quarter of all instructors.