You are just making up reasons for not studying

In the previous chapter, we read about Robin's confession in front of the whole orphanage then things were not normal but still he had all the kids on his side. We also read that Robert started school and on the first day of his class after it started Robin started to get bored. Then the teacher asked him a question he didn't answer and just ignored, The teacher got annoyed and said:

Teacher: What is wrong with you? (angrily)

Robert: (didn't answer)

Teacher: I am talking to you, Robert! (with the holds his shoulder and shook it)

Robert: Yeah I know!

Teacher: Then why are you not paying attention to the lecture

Robert: I just don't like it that's why

Teacher: What do you mean you don't like it?

Robert: It's just boring

Teacher: Can you please explain what is boring?

Robert: I mean the questions, the books, everything is so boring and easy. It is so childish we should study something more developed