Why teachers go nuts

TEACHER: Why are you late?
STUDENT: Class started before I got here.

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TEACHER: Maria, go to the map and find North America .
MARIA: Here it is.
TEACHER: Correct. Now class, who discovered America ?

CLASS: Maria.

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TEACHER: John, why are you doing your math multiplication on the floor?
JOHN: You told me to do it without using tables.

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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 is wrong, but you asked me how I spell it.

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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's H to O.
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TEACHER: Winnie, name one important thing we have today that we didn't have ten years ago.
WINNIE: Me!

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TEACHER: Glen, why do you always get so dirty?
GLEN: Well, I'm a lot closer to the ground than you are.

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TEACHER: Millie, give me a sentence starting with ' I. '
MILLIE: I is...
TEACHER: No, Millie..... Always say, 'I am.'

MILLIE: All right... 'I am the ninth letter of the alphabet.'

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TEACHER: George Washington not only chopped down his father's cherry tree, but also admitted it.
Now, Louie, do you know why his father didn't punish him?

LOUIS: Because George still had the axe in his hand.....

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TEACHER: Now, Simon , tell me frankly, do you say prayers before eating?
SIMON: No sir, I don't have to, my Mom is a good cook.

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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.

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TEACHER: Harold, what do you call a person who keeps on talking when people are no longer interested?

HAROLD: A teacher