This article surveys three approaches to improving school discipline: ecological approaches to classroom management, schoolwide positive behavioral supports, and social and emotional learning. It describes how classroom management focuses on improving student engagement and participation, while ecological approaches aim to strengthen classroom activities and foster student development. The article also discusses how schoolwide positive behavioral support and social emotional learning programs have been shown to reduce problematic behaviors. The implications are that the approaches studied, such as schoolwide positive behavioral supports and social emotional learning, could help improve school discipline by developing student self-discipline and establishing clear behavioral expectations.