Teacher

It was the first day of school. Harry's mother went into his bedroom and said, "Come on Harry, get up now. You have to go to school today."
"But I don't want to go to school," replied Harry, "I want to stay in bed. Why do I have to go to school"?
"Because," answered his mother, "you're a teacher!"

Harvard University Visit

A high school senior was inspecting Harvard University, where he hoped to attend the following autumn. As he was walking across the Quad, he stopped a distinguished-looking man and asked, "Sir, can you please tell me where your library is at?"
The man looked down his nose and replied, "Son, I'm head of the English department, and I can assure you we don't end our sentences with prepositions. Re-cast your sentence in a proper form and I will reply."
"Can you tell me where your library is at, ass-hole?"

School Trouble

My son was thrown out of school today for letting a girl in his class give him a hand-job. I said "Son, that's three schools this year! You'd better stop before you're banned from teaching altogether."