When her substitute teacher realizes she is struggling in math, Judy is sent to a math tutor at the local college and soon is completely into the spirit of college life.
A.J. and his friends get a Personal Digital Assistant named Miss Porter as a substitute teacher, who can order pizza and tell endless jokes, but grows power-hungry when her system is changed and tries to take over Ella Mentary School.
Clementine's beloved teacher, Mr. D'Matz might be leaving for the rest of the year to go on a research trip to Egypt. The only solution, she decides, is to hatch a plan to get Mr. D'Matz back even if it means ruining his once-in-a-lifetime chance.