A priority for governments is ensuring public confidence in the quality and value of vocational education and training (VET) available to learners throughout their lives. The delivery of high-quality teaching, learning and assessment is an important element of this and is known to directly impact on outcomes for students. However, little research has examined what high-quality training delivery looks like in practice and how it might be measured. Based on consultations with registered training organisations (RTOs) from the public, private, adult and community education (ACE), and enterprise segments of the sector, this research investigated how the quality of delivery in VET is currently defined and measured. It also set out to identify the barriers to high-quality delivery, as well as approaches that might better encourage and sustain high-quality delivery into the future.