This paper provides a scan of the literature to expand the knowledge base for the field of online, blended, and competency-based education. Authors seek to integrate the core ideas of personalized learning, blended learning, competency education, and standards. The goal of the paper is to explain the nuances of key terms used across the field of K-12 education related to personalized, blended and competency education, and how the ideas integrate in order to create new learning models. Read this paper to make sense of these terms and discover how they fit together.