I think it's a great idea!
Having done Yoga, I know it's not just a form of exercise. It's a great way to regroup, de-stress, and focus. It's great exercise for building strength and flexibility. Many say it's beneficial for memory, concentration, and self esteem!
Want to learn more? Here's a list of benefits of Yoga.
Here's a website called Yoga 4 Classrooms (That's why my school is doing.)
I'm hardly an expert, but the teachers who are using Yoga most definitely see the benefits. I first learned Yoga in 1977 and have always loved it. I've tried a few poses and breathing with my students over the years, and they've always responded to it.
These days, kids are under more stress than ever. No Child Left Behind has put more pressure on the kids, and administrations all over the country are pushing for more and more. These poor little ones are getting less recess and more testing. I think it's time to bring more Yoga into the classroom!