This document provides guidance on developing assessment tools. It outlines ideal characteristics that tools should possess, such as clearly describing the context, competency mapping, evidence criteria, and recording requirements. The document then gives an example of how these characteristics could be applied to a portfolio-based assessment tool, outlining features such as instructions for candidates, evidence to be collected, decision-making rules, and allowing for reasonable adjustments. Overall, the guidance aims to help ensure assessment tools are valid, reliable, and flexible.