This presentation considers the characteristics and challenges of male adolescent voice change (MAVC) and how teachers can mitigate these to ensure healthy vocal production in high-school students. The presentation also comments on NCEA Solo performance assessment practice, and compares it with a contemporary scientific understanding of MAVC, thus highlighting any discrepancies between known physical limitations experienced during MAVC, and the criterion being used (the manner in which it is being interpreted, and by whom) to assess vocal ability.