This systematic review explored methods of UDL implementation for postsecondary students with and without disabilities and the degree to which these methods are effective. The authors examined 17 empirically based studies published across 12 journals focused on the application of UDL principles. The studies were analyzed with regard to 1) participant information, 2) courses and delivery mode, 3) independent and dependent variables, 4) implementation strategies, and 5) effectiveness of implementation. The analysis revealed that 15 of the studies reported effective outcomes, one study resulted in blended effects, and one did not discuss implementation. Two studies used a blended delivery mode for special education courses, and four studies used online delivery modes for a teacher education course and three professional development programs. Other studies used face-to-face instruction for teacher education, general courses, and workshops. The most common independent variables were UDL principle-based course design and implementation, followed by hands-on activities, training of instructors, peer-led team learning, and a collaborative professional development model. The dependent variables included course evaluation, learning outcomes, such as revision of lesson plans and technology use, and level of confidence or acquisition of knowledge about UDL and disabilities. Finally, multiple instructional strategies focusing on the UDL principles were utilized, to include web-based computer-mediated communication, web-based class management systems, interactions with technol