School to work, learning by doing, work to learn, apprenticeships, internships. By whatever name we choose to call them, opportunities through which students experience their chosen professions before formally entering into them are in the process of becoming a staple of twenty-first-century education. Internships-the name by which these experiences will be called in this book-are supervised introductory career opportunities provided in partnership between academic institutions and professional organizations. They are not new, however. Their existence is traceable back through centuries of published work and suspected perhaps to the very dawn of humanity itself as each set of skills is passed on to the next generation by persons teaching others through demonstrated and jointly participated experiences.