This review of the literature analyzes scaffolding as it relates to best practices in the English as a second language (ESL) classroom, grades K-12. As defined by many professional educators, instructional scaffolding is temporary support provided to students on an individual basis based on their needs. Despite the ever-increasing population of ESL students in K-12 classrooms, the ESL instructional approach lacks consistency from country to country, state to state, and classroom to classroom. There is a wealth of research on ESL instructional techniques, but a lack of studies on the impact of various approaches to instructional scaffolding. The articles in question address instructional scaffolding in different ways for different grade levels spanning K-12. Did one prevail as a potential universal scaffold? How might we, as educators, stop reinventing the wheel and rely on a sound methodology? Studies on scaffolding as it relates specifically to ESL students' comprehension is limited. These findings have important implications for the practices of current and future ESL teachers.