Applied behavior analysis (ABA) is a prominent and pervasive factor in effective academic instruction for all students, including students with autism spectrum disorder. In this article, we discuss the important contributions of ABA to the processes of academic instruction. To illustrate the impact of ABA in the context of academics, we describe two areas of research and practice in which the perspectives and procedures of behavior analysis have had a conspicuous presence: antecedent interventions and curriculum-based assessment. We also note that the principles and methods of ABA have been extensively integrated into routine educational procedures, that ABA procedures are geared only rarely to particular diagnostic populations, and that recent mandates for functional behavioral assessments signify that the impact of ABA on the practice of education is increasing.