When my son was in elementary school he hated getting up and going to school. He used to throw a fit in the car in front of the school.
Ir is almost all kid that do that. He will get used to it.
He has gotten better at time. I used to think people thought I was beating him and I would get in trouble. His fits were really bad. He liked to scream a lot.
People can be bad some time. I hope it will be better.