Don has served as the vice chancellor for enrollment services for Indiana University Bloomington, the associate vice president for enrollment services for the seven campuses of the Indiana University system, the executive associate dean of the School of Education, and the chair of the Department of Educational Leadership and Policy Studies. His areas of specialization include college choice, student persistence, student financial aid policy, and enrollment management. Don has consulted with more than 45 colleges, universities, and related educational organizations including: The College Board, Educational Testing Services, the University of Cincinnati, Inter-American University of Puerto Rico, the Pew Charitable Trust, the University of Missouri, Colorado State University, the University of Alabama, and the General Accounting Office of the United States Government. He has presented more than 130 scholarly papers and invited lectures and is the author or co-author of 12 books and monographs and more than 65 articles and book chapters. Don is currently directing funded projects of The College Board, the Lumina Foundation for Education, and the Spencer Foundation focusing on student success and persistence.