The Girls of Bridge High - Encounter a Spy — Ruth Benjamin

A fax containing top secret information gets picked up by a fax machine belonging to a Grade 9 schoolgirl who assumes it is part of her history homework. At a mayoral tea party her teacher mentions some of the odd information that students write in their history tests. At least one of the guests realizes the significance and here begins a mystery and an adventure story that has the reader engrossed until the very end.