TEACHER: How old is your father?
KID: He is 6 years old.
TEACHER: What? How is this possible?
KID: He became father only 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?
CLASS: Maria.

TEACHER: Glenn, how do you spell "crocodile"?
GLENN: K-R-O-K-O-D-I-A-L.
TEACHER: No, that's wrong.
GLENN: Maybe it's wrong, but you asked me how I spell it.

TEACHER: Donald, what is the chemical formula for water?
DONALD: HIJKLMNO
TEACHER: What are you talking about?
DONALD: Yesterday you said it's 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's the same dog.