He is the author of International Student Engagement: Strategies for Creating Inclusive, Connected, and Purposeful Campus Environments. He is also a lead researcher on the Global Perspectives Inventory (GPI) which examines the relationship between educational experiences and global learning outcomes based on survey responses of 100,000+ undergraduates and 100 American colleges and universities. Dr. Glass has published articles in the Journal of Educational Psychology, the Journal of Studies in International Education, Journal of Diversity in Higher Education, and the International Journal of Intercultural Relations.