I am freaking out here!

Wyatt starts school tomorrow! Ugh! It's not that he is going to school. It's that it is so far away and he will be taking a school bus too. The drive is about 1/2 hour one way.
What seat is the safest on a school bus? I want him sitting there. I have all these "WHAT IFs" roaming around in my head. Ugh!!!
I will check back in with you all!