Dog in school

Once a dog came in my school.First he went to the principal. The Principal jumped on her desk she was so scared. Later the dog went to the art room ? I don't know what she was doing she knocked over all the paints,brushes,and all the other art supplies . Then she went to the music room played the tuba spit gum in the tuba  later a kid came in played the tuba the gum spattered out on mr.matts face he yelled and yelled . Finally a lady kicked him out. 

He landed down his chimney and landed on his owner