Dan Gutman 
My Weirder-est School #3: Dr. Floss Is the Boss! 

With more than 23 million books sold, the My Weird School series really gets kids reading!In this third book in the My Weirder-est School series, A.J. and his friends learn about good oral hygiene.Grab your toothbrushes! Its National Dessert Day, and Ella Mentry School has asked local dentist Dr. Floss to educate A.J. and his friends on the dental dangers of sweets. But Dr. Floss has other plans. She wants the kids to eat as much sugar as possible so that theyll need a dentist! Will someone get a cavity?Perfect for reluctant readers and all kids hungry for funny school stories, Dan Gutmans hugely popular My Weird School chapter book series has something for everyone. Dont miss the hilarious adventures of A.J. and the gang!