This collaborative afternoon work session provides teachers dedicated time to apply their learning from the ATLAS morning session by developing aligned assessment materials. Participants will write assessment items in their ATLAS Classroom tool bank, create Common Formative Assessments (CFAs) aligned to essential standards using existing item bank resources or items they create, and gain hands-on practice navigating and utilizing the ATLAS system. Educators will leave with ready-to-use materials and increased confidence in using ATLAS tools to support student achievement.