Rupert P. Brown's biggest worry about sixth grade is it might be well, a little bit dull. After all, how can a fellow be expected to top a fifth grade year in which his best friend was kidnapped, and he found out his best teacher ever was a real, honest-to-goodness witch? But when Rupert types the word 'computowitch' in an e-mail message, his screen goes all green, and then his parakeet starts giving him math lessons. He knows it can only mean one thing: Miss Switch is back!