Teacher: How old is your father?
Johnny: He is 6 years old.
Teacher: How is this possible?
Johnny: He became a father when I was born.
Teacher: Maria, go to the map and find North America.
Maria: Here it is.
Teacher: Correct. Now, class, who discovered America?
Teacher: Glenn, how do you spell ‘crocodile’?
Teacher: No, that’s wrong.
Glenn: Maybe it is wrong, but you asked me how I spell it.
Teacher: Donald, what is the chemical formula for water?
Donald: H I J K L M N O
Teacher: What are you talking about?
Donald: Yesterday you said it is H to O.
Teacher: Clyde, your composition on ‘My Dog’ is exactly the same as your brother’s. Did you copy his?
Clyde: No sir, it is the same dog.
Teacher: Harold, what do you call a person who keeps on talking when people are no longer interested?
Harold: A teacher.
Credit to Poonita