Big kids learn from little kids

I was web-browsing pretty much at random when the phrase "teaching children emotional literacy" caught my eye. I'm working with some kids who are having significant trouble with this. So now I'm wondering again whether the blue states could just join Canada, because once again they have got the cool stuff.

Roots of Empathy is a program that reduces bullying in schools and helps kids learn to understand emotions by bringing babies and their parents into classrooms and asking the kids to figure out what the baby is experiencing and what it needs. Remind me, again, why our school system has kids spending time always and only with kids exactly their own age?