Who were the cunningham boys and what happened to them? whats the irony here?

To Kill a Mockingbird! A classic
Well, the Cunningham boys were a part of the group the character Boo hung out with. The boys were sent to industrial school after getting in trouble, they got a great education, but Mr. Radley refused to let Boo go. The other boys got engineering degrees while Boo was left stuck in the house. Mr. Radley did not let Boo go because he believed it was a "disgrace" to do so.

Have a nice day!