Captain Underpants Punctuation

A class of children are sitting on the mat.
 This is me in Kindergaten. says George.
"And this is me." 
Exclaims Harold.
"George and I aren't friends yet, but we're about be.
The teacher begins writing on the board and says.
"The seventh planet from the sun is called.... Urans"
George and Harold burst into laughter.
The teacher quickly turns to glare at the boys.
Continues George laughing at Harold. "Scientists"..... 
George looks over to Harold.
Ur..... Auns. Laughs Harold. 
I know... Turning back to the board she says. 
The teacher turns and coughs.
Hrmmm Hrmm. She continues speaking as she writes on the board.
known as a gas giant....
Hahahahahahahaha 
Laugh the boys hysterically