Five years after she graduated from high school, teacher, catechist, and sought-after speaker Katie Prejean McGrady returned to her alma mater in Lake Charles, Louisiana, to teach freshman theology in room 24. In the early years of her career, McGrady's hormonal, sometimes grumpy, and often confused students taught her what it means to evangelize. Her frequently witty and always candid stories-and the ten lessons she offers-will inspire anyone who works with youth in the Church today.