Behavior problems, even in preschool

wow - take a look at this article:

http://www.nytimes.com/2005/05/17/education/17expel.html

and watch this video:

http://www.youtube.com/watch?v=8eCfnrGu5xo&feature=PlayList&p=C194894CD10FFB71&playnext=1&playnext_from=PL&index=19

We are curious:

What are some possible explanations for the drop in expulsion rates when the children enter kindergarten?

What are some potential problems that modern preschools face? Specifically what resources should they have access to that they currently do not?

What are some explanations for the different rates of expulsion among various ethnic and cultural groups?

What is changing in our culture that creates increasing amounts of "challenging behaviors"?

References:

Lewin, T. (2005, May 17). Research Finds High Rate of Expulsion in Preschool. The New York Times.

"Challenging Behavior in Young Children." Youttube Video. Online video clip. youtube.com Accessed on 01 November 2009.