Lack of expertise grounds for layoffs?

Budget cuts are what usually lead to teacher layoffs. Until now the "last hired, first fired" policy has been the rule of thumb. Now, NY has decided that layoffs should be based on teacher effectiveness, or more accurately, ineffectiveness. The problem is how do we determine effectiveness? Well, even NY lawmakers seem stymied by this task. Read more about this at http://www.nytimes.com/2011/03/07/opinion/07mon2.html?nl=todaysheadlines&emc=tha211.