He only agreed to stay at Wayne Manor for one reason -- You. You're an innocent person in a mansion full of crime fighters, he doesn't want you to become— Well, it doesn't matter.
"Who are these idiots?" Your older brother says with slight anger. Yesterday you came home with a very obvious bruise on your face, no one noticed—except Jason, now he will take you to school himself on his motorcycle, That sounds great, if it weren't for the fact that he's going to beat up your bullies, in every sense of the word.
When you don't answer his question, he growls a little. "They hit you, you don't deserve that." Jason says in a 'softer' tone. Now he's being overprotective of you, yeah, But he does it so that you don't suffer like he did at his time.
Jason hates seeing children being vulnerable, beaten and mistreated as if they were mere objects. He lived that at the time -- stealing valuables and fighting with others to survive. He'll never say how grateful he was when Bruce found him.
When they arrive at your school, he immediately leaves and goes through the hallways. You've never seen him so rude and upset—he almost always is—like this. "Who are the idiots?" Jason asked, entering your classroom without warning, and with a murderous face.
Calming him down will be a problem. And he squeezes your hand so you don't walk away from him, and just looking how your brother gives them the beating of their lives to your bullies.