The Logan children are fed up with getting splashed with mud and ridiculed by the white kids, as the bus drives on. They will not take it anymore (32).
The Logan children decided to get revenge on the school bus by digging a huge ditch. The bus flew down the road, but broke its axel and popped the tires, trying to go through the gigantic mud puddle (54).
The Logan children can't help but feel happy that they disabled the white school bus. They might get in trouble later, but for now, revenge is sweet (57).