When Andy reached where the kid who hasn't passed a single test's class. He knew that this will be the last kid to teach. He had to try his best.
He found the kid, tried to teach him with all the info he had. Some of the kid's friends tried to distract him, but they failed because Andy was making him interested about the info
One of the teachers gave Andy a badge for teaching other students.
On the way back to his class, Andy found a wallet which he didn't know whose it is. So he went to a teacher and asked him to announce whose wallet it was. A kid quickly came and thanked Andy for finding his lost wallet.
When the teacher came to congratulate Andy, Carl quickly stole Andy's badge thinking that the teacher wouldn't notice, but the teacher saw what Carl did, so he punished Carl.
After that, Andy went back to study like an ordinary student happily ever after. He learned that if he tries something very hard, he could be able to do it.