This resource contains practical material to help assessors maintain the quality of their assessment systems. It includes an overview of how registered training organisations can develop a validation or moderation process, and a range of checklists that assessors can use as part of the assessment review process. Also included is a sample of a code of practice for assessors, guidelines for set-up simulated assessment and gathering evidence, and guidelines for training organisations on documenting partners and collaborative assessment arrangements. The resource is designed as a series of strategies with case study examples and scenarios of how particular RTOs have dealt with assessment issues.