When the students of Ella Mentry School receive a million-dollar donation and vote to create an in-school, state-of-the-art TV station so the morning announcements can be broadcast to all the classes, A.J. and the gang wonder about the agenda of their new teacher, Ms. Cuddy, who decides the announcement ratings are too low and has some quirky ideas about how to increase the station's popularity.

On Saint Patrick's Day, A.J. spots a real-life leprechaun sneaking around the school and causing havoc. Can he and his friends catch the leprechaun before there's even more trouble?

"A.J. and his friends are starting fourth grade. A new school year means a new teacher, and Miss Banks may be their weirdest one yet. She won't stop playing practical jokes on the class, and A.J. has reached his breaking point. Will he and the gang learn to not fall for their teacher's tricks? Or will Miss Banks prevail as the ultimate prankster?"--