Federal policy initiatives such as the flexibility waivers for accountability are requiring that states transition away from the use of an alternate assessment based on modified achievement standards (AA-MAS). It is expected that those students who had participated in that assessment will instead participate in the state's general assessment (or a Race-to-the-Top consortium assessment if the state belongs to one). It is important that this transition be successful. Much has been learned through the development of the AA-MAS and its implementation. These lessons learned form the basis for ensuring the successful transition from the AA-MAS to the general assessment. Indeed, the lessons learned from the AA-MAS provide important information for all states as they strive to ensure that their general assessments are appropriate for a broad range of students. This document discusses the benefits and challenges and provides suggestions for a successful transition.