(The following jokes came in an email.  Although they appear to be in a classroom setting, some of them very easily could have happened during homeschooling):

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: Glen, how do you spell 'crocodile'?

GLEN: K-R-O-K-O-D-I-A-L

TEACHER: No, that's wrong.

GLEN: 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: Jessie, name one important thing we have today that we didn't have ten years ago.

JESSIE: Me!

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TEACHER: Jacob, why do you always get so dirty?

JACOB: 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, 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, 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.