The only error I can see in this sentence is roll-a-coaster. I believe it should be a roller coaster instead, which is a ride in amusement parks. Other than that, it is more grammatically correct to say "I've just gotten off the wooden" rather than "I just got off the wooden" however, it's up to you.
Since you used the name Scout, I'm guessing this is about "To Kill a Mockingbird". Hopefully I'm correct, but here we go. Scout has a new teacher when she starts going to school again. Scout already knows how to read. Every night, she and Atticus had read books together, and he had therefore taught her to read. Now, in school, they were learning to read. Since Scout had already learnt, she didn't need help. The teacher, however, did not like this. (Sorry, I can't remember the teacher's name for the life of me!) The teacher told Scout to tell Atticus that they can't read together anymore. Scout is very obviously upset. She believes she should be able to read with Atticus because she is learning, after all. So, she dislikes the school's new approach to teaching. Hope this helps you!
Basically if I say the word stupid that would have a bad impression so it's negative, but if I change it to struggling/needs help it would be either neutral or positive
Surprisingly, his hands and feet are bigger than normal, which helps him move quickly through the water.
