Inspectors Desparation

A schools' inspector travelling in Kerry, asked a young boy in class,
'Who knocked down the walls of Jericho?'
'It wasn't me, sir', said the boy nervously.
Furious with the low standard in the class, the inspector reported the incident to the headmaster of the school.
'I asked a young lad, who knocked down the walls of Jericho, and he told me that it wasn't him'.
'The little rascal', said the headmaster,'! bet it was him all the time'.
Even more furious, the inspector went to the school manager and repeated the story.
'Well', said the school manager, 'the boy comes of an honest family, and you can take it from me, that if he says he didn't knock down the walls of Jericho, then he is telling the truth'.
Finally, in despair, the inspector reported the whole affair to the Department of Education. He received the following communication:
"Dear Sir,
With regard to your recent letter concerning the Walls of Jericho, we beg to inform you that this matter does not fall within the jurisdiction of this department. We therefore suggest that you refer the problem to the Board of Works."