Online education is no longer a trend. Rather, it is mainstream. In the fall of 2012, 69% of chief academic leaders indicated online learning was critical to their longterm strategy and of the 20.6 million students enrolled in higher education, 6.7 million were enrolled in an online course (Allen & Seaman, 2013; United States Department of Education, 2013). As developments in educational technology continue to advance, the ways in which we deliver and receive knowledge in both the traditional and online classrooms will further evolve. It is necessary to investigate and understand the progression and advancements in educational technology and the variety of methods used to deliver knowledge to improve the quality of education we provide today and motivate, inspire, and educate the students of the 21st century. This paper explores the evolution of distance education beginning with correspondence and the use of parcel post, to radio, then to television, and finally to online education.