The teacher had had enough. She took Johnny to the principal's office. While Johnny waited  in the outer office, the teacher explained to the principal what the situation was. The principal told the teacher he would give the boy a test and if he failed to answer any of his questions he was to go back to first grade and behave. The teacher agreed.

Johnny was brought in, the conditions were explained to him, and he agreed to take the test.      Principal: "What is 3 x 3?" Johnny: "9". Principal: "What is 6 x 6?"   Johnny: "36". And so it went with every question the principal thought a third grader should know. The principal looked at the teacher and told her, "I think Johnny can go to the third grade". 

The teacher said to the principal, "Let me ask him some questions". Both the principal and Johnny agreed.

The teacher asked, "What does a cow have four of that I have only two of?" 
Johnny, after a moment, "Legs"
Teacher: "What is in your pants that you have but I do not have?" The principal's eyes  open  really wide and before he could stop the answer, Johnny replied,   "Pockets". 
Teacher: "What does a dog do that a man steps into?" Johnny: "Pants."
Teacher: "What word starts with an 'F' and ends in  'K'  that   means a lot of excitement?" Johnny: "Firetruck." 

The principal breathed a sigh of relief and told the teacher, "Put Johnny in the fifth grade, I missed the last four questions myself."