The Great Brain at the Academy — John D. Fitzgerald

This fourth book in the series is a great combination of The Adventures of Tom Sawyer and The Terrible Two series, and is perfect for fans of Roald Dahl.

Everyone knew that Tom Fitzgerald, better known as the Great Brain, would get into trouble when he went off to boarding school at the strict Catholic Academy for Boys. But no one--including Tom--knew just how much! Whether he's running an illegal candy store or earning a reputation as the fastest potato peeler, Tom's great brain never faltersm while his money-making schemes rise to new heights!