On My Very First School Day I Met...by Normal Stiles, illustrated by Bill Mayer

From chapters.ca:
Every child faces that first day of school where the unknown beckons. To lighten the event and to delight young readers comes this hilarious book about a child who meets the strangest and silliest characters in the on the very first day of school. Sure to elicit cries of "More!" All the witty rhymes by former Sesame Street head writer Norman Stiles and illustrated by Society of Illustrators Gold Medal winner Bill Mayer!