The UDL (Universal Design for Learning) Observation Checklist by SELF is a practical tool for evaluating classroom implementation of UDL principles. It helps educators assess whether learning goals, assessments, materials, and teaching methods are inclusive and provide multiple means of engagement, representation, and expression. The checklist ensures that students have diverse options to demonstrate mastery, receive feedback, and engage with materials through various modalities, promoting an accessible and student-centered learning environment.