This appendix volume supplements "Evaluating the Federal Innovative Assessment Demonstration Authority: Early Implementation and Progress of State Efforts to Develop New Statewide Academic Assessments. Evaluation Report. NCEE 2023-004" analyzing the early progress of the first five assessment systems participating in the Innovative Assessment Demonstration Authority (IADA) created by the 2015 reauthorization of the Elementary and Secondary Education Act. These systems include: (1) the New Hampshire Performance Assessment of Competency Education (NH PACE); (2) the Louisiana Educational Assessment Program 2025 Humanities (LEAP 2025 Humanities); (3) the North Carolina Personalized Assessment Tool (NC PAT); (4) the Georgia MAP Assessment Partnership (GMAP) through-year assessment and (5) the Georgia Navvy assessment system. The volume documents the features of the IADA program and the five IADA systems, the study team's research activities, and includes more detailed findings than were summarized in the report. [For the full report, see ED627872. For the Study Highlights, see ED627880.]