If you are interested in working as a health advocate, take a broad range of classes in high school. Advocates need an extensive base of knowledge that covers medical, financial, emotional, and legal areas. Courses that are especially useful include business, mathematics, biology, health, and chemistry. Be sure to take four years of English as well as speech classes, because health advocates need strong oral and written communication skills. Learning a foreign language such as Spanish will also be useful. You may also want to take government, psychology, and computer science classes to prepare for this career.