1. Wikipedia contributors. Audience response. Wikipedia, The Free Encyclopedia. December 13, 2013, 14:15 UTC. Available at: http://en.wikipedia.org/w/index.php?title=Audience_response&oldid=585906972. Accessed January 21, 2014.
2. Mathews J: “Just whose idea was all this testing?; Fueled by technology, nation's attempt to create a level playing field has had a rocky history”, The Washington Post, 2006.
3. The fall of the standard-bearers;Ravitch;Chron High Educ,2006
4. Education. Farewell, lecture?;Mazur;Science,2009
5. Wikipedia contributors. Shovelware. Wikipedia, The Free Encyclopedia. December 12, 2013, 06:08 UTC. Available at: http://en.wikipedia.org/w/index.php?title=Shovelware&oldid=585705656. Accessed January 21, 2014.