The Workforce Innovation and Opportunity Act (WIOA) requires states to reserve at least 15 percent of their total State Vocational Rehabilitation Services program funds to provide pre-employment transition services to help students with disabilities transition from school to work. The U.S. Government Accountability Office (GAO) was asked to review how states were implementing these services. This report examines (1) steps states reported taking to implement pre-employment transition services, and (2) implementation challenges states reported and how Education has addressed them. GAO reviewed documents and funding data from Education, and federal laws and regulations; surveyed all 79 state vocational rehabilitation (VR) agencies (74 responded); held discussion groups with representatives of 29 state VR agencies; and interviewed officials from Education and three states (Idaho, Illinois, and Maryland) GAO selected for variety in size and type of agencies, among other factors. GAO is recommending that Education (1) establish timeframes for providing additional information on allowable expenditures; (2) take additional steps to assist states that have not updated and finalized their interagency agreements; and (3) develop a written plan with specific timeframes and activities for identifying and disseminating best practices. Education agreed with the first recommendation and disagreed with the other two. GAO revised the second recommendation and maintains that specific information is needed for the third, as discussed in the report.