The Association for the Advancement of Computing in Education (AACE) is an international, non-profit educational organization. The Association's purpose is to advance the knowledge, theory, and quality of teaching and learning at all levels with information technology. "E-Learn 2018: World Conference on E-Learning" took place in Las Vegas, Nevada, October 15-18, 2018. The proceedings are comprised of 227 papers, including 4 award papers. The award papers cover topics such as pupils' opinions on learning physics; effects of integrating computer technology into mathematics instruction; implications of flipped teaching strategy on preservice teachers' self-efficacy; and experience of virtual writing groups. [Co-editors of the proceedings include Theo Bastiaens, Curtis Bonk, Sanjaya Mishra, Lisa Yamagata-Lynch, Aaron Doering, Gjoa Andrichuk, Marck Curcher, Jon Dron, Nathaniel Ostashewski, Stefanie Panke, Thomas Reeves, and Tom Reynolds. For the E-Learn 2017 proceedings, see ED605103.]