An interesting article: Why we are all becoming independent contractors (Nation of Change, Feb. 23, 2015).
My comment, posted at http://www.nationofchange.org/2015/02/23/becoming-independent-contractors/
Many college professors are now independent contractors, known as "adjuncts." They are paid separately for each course they teach, and are not paid very much, and get no benefits. As budgets at universities get tighter, departments are gradually moving toward adjuncts.
Will public school teachers become independent contractors? This is, I think, one of the goals of school "reformers," whose reforms are all dedicated to more profit for the .01%. Elminating retirement and benefits, and making teaching a part-time profession would release billions for more unnecessary technology in the schools (of course some technology is great, but much of it is being imposed on schools in a great hurry without proper testing).
For more details, please see http://skrashen.blogspot.com/2013/05/the-end-of-teaching-profession.html