Complex sentence: Utilizing his falsified credentials, he again finds work as a substitute teacher, and after making a good impression on the principal and the retiring school librarian, Miz Mimi, Jake is invited to become a full-time English teacher at Denholm Consolidated High School.
Split into simpler sentences: Utilizing his falsified credentials, he again finds work as a substitute teacher. Making a good impression on the principal and the retiring school librarian, Miz Mimi, Jake agrees to become a full-time English teacher at Denholm Consolidated High School.