Who broke down the walls of jericho?

A school inspector is visiting a grade 4 class in a local school in Soweto. He is introduced to the class by the teacher, Miss Wesizwe.

She says to the class: "Let's show the inspector just how clever you are by allowing him to ask you a question."

The inspector decides to ask a Biblical question. He says: "Class, who broke down the walls of Jericho?"

For a full minute there is absolute silence. All the children just stare at him blankly.

Eventually Sipho raises his hand and the Inspector points excitedly to him.

Sipho stands up and says: "Sir, I don't know who broke down the walls of Jericho, but it wasn't me."

The inspector looks at the teacher for an explanation. She says: Well, I've known Sipho since the beginning of the year and I believe that if he says that he didn't do it, then he didn't do it."

The inspector is shocked at the level of ignorance. He storms down to the principal's office and tells him what happened.

The principal replies: "Look, I don't know the boy, but I socialise every now and then with his teacher and I believe her. If she feels that the boy was not involved, then he must be innocent."

The inspector can't believe what he is hearing. He grabs the phone on the principal's desk, dials the Minister of Education and relates the entire episode, and asks her what she thinks of the education standard in the school.

The Minister sighs heavily and replies: "Eish, wena, you know I'm very bezy. I don't know the boy, the teacher or the principal. Just get three quotes, add 50% for me, and have the wall fixed by my brother."