When the United States military adopts a newfangled test from France called the "intelligence quotient test" during the first world war, no one expects the turmoil that follows. Thousands of immigrants fail it and are forced to return to homelands devastated by war, disease, and famine.

For Josephine Pembrooke, the shy schoolmarm at Camp Travis in Texas, the problem quickly becomes apparent. How can soldiers pass a test they can't even read? So, Jo labors in secret to create a better test. Knowing all along it can't save the one soldier she'd hoped to help.