Outcomes-based education (OBE) focuses on defining explicit learning outcomes that should result from instruction. According to William Spady, OBE means organizing education around what students should be able to do successfully at the end of their learning experiences. The four basic principles of OBE are clarity of focus, designing curriculum backwards from long-term goals, high expectations for all students, and expanded opportunities for students to achieve outcomes. Implementation of OBE involves understanding the overall goals, setting objectives and outcomes, mapping the curriculum, delivering outcome-based courses, and continuous quality improvement.