 When I grow up, I want to be a teacher. Because when I'm a teacher, I can help kids to learn and chase their dreams. PI, a defect of the immune system, affects millions of children. Early and accurate diagnosis and treatment give children like Sam a chance to achieve their dreams. It takes a lot of caring teachers to make school fun. It took a lot of caring people to keep my dream alive. And now, because of them, I can be head of the class. For more information, visit the Jeffrey Modell Foundation at info4pi.org. Sponsored by the Jeffrey Modell Foundation.