Perks of the shrinking formula

Anne is the principal of a prestigious school, at her age she should have retire but she is a proud lady of the third who still can manage the school, sadly her current problem is driving her crazy, a student named Maddie, who is her grandson's best friend is a smart petite scientist, but her experiments are causing troubles at school, so one day, Anne decided to give her one last chance to Maddie to prove that her experiments could be useful or else the scientist girl would be expelled, so when no one was around at the school Maddie came with her single mother, Helen, to show to these ladies her last creation, nothing could go wrong, right?

This comic has 807 pages