A new system in Chicago is allowing principals to fire non-tenured teachers with the click of a computer button. It's something they'll have to do a lot of: the districts expect to lay off some 1,100 non-tenured teachers before next fall. Principals simply choose from a menu of six reasons why they wish to dismiss a teacher, and finalize the dismissal by pressing the "not renew" button. One principal says of the new process, "This is an easier way for principals to get rid of that dead weight."