In recent years, executive functioning (EF) has received increasing attention from researchers and practitioners focusing on how EF predicts important outcomes such as success at school and in life. For example, EF has been described as the single best predictor of school readiness (Blair & Razza, 2007). Moreover, EF has been implicated in numerous facets of functioning, such as academic, social, psychological, and behavioural domains (Zhou, Chen, & Main, 2012). Due to the wide-ranging influence of EF, school psychologists can benefit from knowledge of EF and its core components. The goal of this review is to integrate theoretical, empirical, and applied details concerning EF, paying careful attention to aspects relevant for school readiness and success.