Many years ago, we used carpet scraps on the floor in the school buses to combat some of the noise.
If you could find some underpadding too, well that made you king!
Lined right to the edge of where the kids climbed the stairs.
Loved every minute of it, ain't going back, great respect for those who continue to get 'em to the education and home again!
Lowest paid commercial driver on the road, with the biggest responsibility, and in many jurisdictions, the greatest licence requirements.
Happy coaching!
Buswarrior