Hi,
I think that's a wonderful idea! The daycare that my son and daughter went to teaches select signs to the children. I was thrilled when I found out that they were doing that. My son (he's 2) will still sign please when he speaks the word please.
Edited to say: I'm taking an ASL class, now. However, I'm having a hard time locating one for my daughter who really wants to learn. I would teach her, but I'm an ASL newbie. 
So I would be happy if she was able to learn it in school.
