This supplement to the resources and training manual Assessing Youth Success was designed as a facilitator's guide to activities for a 3-hour training. The purpose of the training is to help participants become more proficient in assessing youth success. The supplement contains five new optional activities intended to help participants explore assessment in more depth and to teach them techniques to build, develop, and critique assessment tools. Each activity includes goals, a time frame, a list of materials, and a brief background to the topic area covered in the title. The five activities are titled as follows: (1) Critiquing Assessment Scenarios: Assessment in Context; (2) Assessing Youth Success Characteristics: Building on Current Assessments; (3) Authentic Assessment Using Multiple Intelligences: Examples of Authentic Assessment; (4) Building a Rubric: Judging Performance; and (5) Standards We Agree On: Developing a Deeper Understanding of Students' Culture and Strengths Through Community. The supplement also contains a set of handouts for the training, many of which are formatted as worksheets; 15 online resources; 13 resources for further reading; and 7 references. (WFA)