From the New York Times:
...Three decades ago, adjuncts — both part-timers and full-timers not on a tenure track — represented only 43 percent of professors, according to the professors association, which has studied data reported to the federal Education Department. Currently, the association says, they account for nearly 70 percent of professors at colleges and universities, both public and private.
John W. Curtis, the union’s director of research and public policy, said that while the number of tenured and tenure-track professors has increased by about 25 percent over the past 30 years, they have been swamped by the growth in adjunct faculty. Over all, the number of people teaching at colleges and universities has doubled since 1975.
University officials agree that the use of nontraditional faculty is soaring. But some contest the professors association’s calculation, saying that definitions of part-time and full-time professors vary, and that it is not possible to determine how many courses, on average, each category of professor actually teaches.
Many state university presidents say tight budgets have made it inevitable that they turn to adjuncts to save money.
Read the whole article here.