In Chapter 10 of To Kill a Mockingbird, Why won’t Jem allow Scout to brag about Atticus at school? Do you agree with him? Why?

In Chapter 10 of To Kill a Mockingbird, Scout's suitably impressed by Atticus's shooting of the rabid dog Tim Johnson. Neither she nor Jem ever knew about their father's skills as a marksman. They'd always thought Atticus was kind of old and feeble. He wasn't like other dads; he never played poker, never drank, never played touch football. But now Scout and Jem are astonished to discover from Miss Maudie that Atticus has the reputation of a real crack-shot; he didn't get the nickname 'Ol' One Shot' for nothing.
For the first time in her life Scout has something to brag about in relation to her father. But Jem doesn't want her to. He figures that if Atticus were really proud of his shooting skills he'd have told them about it. But he didn't; he was always way too modest about his abilities. Why? Because "Atticus is a gentleman," says Jem, "just like me!"
On the whole, I think that Jem is right not to want Scout to brag about Atticus. He may be the deadliest shot in the whole of Maycomb County, but he's still a very modest man, and so wouldn't want his children bragging about him to the other kids. It's important, then, to respect his wishes. Though he still has a lot of growing up to do, Jem's mature enough to understand that Atticus is special enough as he is. There's no need to boast about his God-given talent with a gun.