I can always make u smile

TEACHER : Why are you late, Frank
FRANK : Because of the sign
TEACHER : What sign
".FRANK : The one that says, "School Ahead, Go SlowTEACHER: John, why are you doing your math multiplication on the floor
!!JOHN : You told me to do it without using tablesTEACHER : 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 OTEACHER : Winnie, name one important thing we have today that we didn't have ten years ago
!!WINNIE : MeTEACHER : Goss, why do you always get so dirty
GOSS : Well, I'm a lot closer to the ground than you are"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 alphabetTEACHER : Can anybody give an example of COINCIDENCE
TINO : Sir, my Mother and Father got married on the same day,TEACHER : Harold, what do you call a person who keeps on talking when people are no longer interested
HAROLD : A teacher