The articles below highlight the effects that iPads have had on a variety of learning environments:
http://news.cnet.com/8301-13506_3-20059325-17.html
http://mindshift.kqed.org/slideshow/a-look-inside-the-ipad-classroom/
http://www.ipadinschools.com/
http://www.reed.edu/cis/about/ipad_pilot/Reed_ipad_report.pdf
iPad 1:1 articles:
http://ipadacademy.com/2010/11/going-one-to-one-with-ipads-learning-on-the-leading-edge
http://www.springfield.k12.il.us/schools/techservices/ipad/
https://sites.google.com/a/fnesu.net/ipad121/
http://www.prweb.com/releases/2011/7/prweb8657014.htm
http://www.technologybitsbytesnibbles.info/archives/5486
http://www.convergemag.com/classtech/Impact-iPad-K12-Schools.html