This study examines the evolution and current state of juvenile sex offender registration and notification (JSORN) laws in the United States, focusing on adolescents adjudicated for illegal sexual behavior (AISB). Originally designed to rehabilitate rather than punish, the juvenile justice system has increasingly adopted adult-oriented practices, with sex offender registration being one of the most significant shifts. While the federal Sex Offender Registration and Notification Act (SORNA) established minimum requirements, states retain broad discretion, resulting in wide variation in qualifying offenses, minimum registration age, duration, removal mechanisms, community notification, and collateral restrictions. Evidence shows these policies rarely reduce recidivism, while creating significant barriers to reentry and contributing to psychological distress, housing and employment instability, and social isolation, especially among minoritized youth. Building on the Juvenile Law Center's 2020 review, this project will provide the first nationwide, up-to-date analysis of JSORN provisions from 2020 to 2025. Using a mixed-methods approach, state statutes and regulations will be systematically coded across multiple variables using Thomas Reuter's Westlaw database, with results compared longitudinally to identify changes over time. These findings will be contextualized with current research in adolescent development, criminology, and therapeutic jurisprudence to assess alignment with developmental science and evidence on recidivism. Anticipated outcomes include a comprehensive dataset and comparative profiles that highlight legislative patterns, persistent inconsistencies, and the broader impacts of these laws on youth development and public safety. By integrating empirical research with legal analysis, this study seeks to inform reforms that balance accountability with rehabilitation, promote equitable treatment of youth, and guide policymakers toward developmentally appropriate, evidence-based approaches to managing AISB.