Errorless learning is an instructional approach designed to eliminate and/or reduce the number of errors students produce in traditional trial-and-error approaches (Mueller, Palkovic, & Maynard, 2007). Various response prompting strategies are employed to produce errorless learning. Simultaneous prompting is an errorless learning strategy that has a growing body of literature to support its use spanning two decades. This paper provides a comprehensive review of the literature including (a) skills targeted for instruction, (b) populations targeted for instruction, (c) strengths and weaknesses of simultaneous prompting, and (d) future areas of research. (Contains 2 tables.)