Yes, I read the report about cooperation and the brain's pleasure
centers. Certainly, no surprise; anyone who has been able to work
cooperatively with others knows the good feelings that come along with
it.
Also, I think your idea of a student created pledge is *very*
interesting and exciting. I do wonder how the parents and
administrators would respond to it. If you do this, I would be
interested to know what they come up with! There is a lot to say about
individual ownership of something created cooperatively and communally.