This is the fourth book in the Crazy Relief Teachers series. Class 6B has been missing a regular teacher for a while, and have had a string of oddball relief teachers.

This time it’s Mr Crikey, a wildlife warrior who dresses in khaki. He offers to help the students save their swimming hole and the surrounding bushland from developers, but how can they raise the money in time?

Enter Benjamin Griffith, a businessman who buys shares in Class 6B and rents out their storeroom as his office.