Chapter 4 considers routes that advanced string players took to prepare for entering the workplace, and the changing socioeconomic and gender constraints that shaped their options. It begins by unearthing informal modes of training and “ways in,” including private or family instruction and unpaid work experience in theater orchestras, and it ends with an examination of what British conservatoire education could offer those who could afford to attend such institutions. Both sections draw on testimonies of individuals. A middle section provides a close examination of diplomas that engages scholarly conversations about musicians’ quest for professionalization and the credibility of qualifications. College of Violinists’ diplomas emerge as reputable qualifications and the exams of choice for less affluent players who wanted to teach. The chapter argues that by increasing the supply of certified teachers and competent performers for both the professional and amateur scenes, conservatoire instruction and reputable diploma certification ensured the robust continuation of violin culture in Britain beyond 1930.