Feministing.com has this video up. Some of the commenters were bothered by the fact that the girls generalized too much about the differences between girls and boys (boys want to play video games and not read for example) and that the teacher suggests girls need to be taken out of their shells to be more assertive. 
I think most of the comments shouldn't be taken as seriously given the girls in the video are eight years old and under and most kids at such a young age make generalizations about the other sex, even if it's just based on a couple of people they know (most often their brothers). As for the teacher's comment, I'm not sure if she means that girls are naturally more quiet or if it's more along the lines of preventing them from becoming that way as many do when they hit older grades. 
But either way it's a cute video and definitely preferable to the all girls' schools in South Carolina. Plus, it gives parents of daughters in New York City an option that's better than most of the public schools.

http://www.youtube.com/watch?v=gVhzDJPxKKg