摘要:AbstractStructured Extracurricular Activities (SEAs) are kinds of optional facilities designed and carried out inside or outside school within a plan after classes. Many students participate in them although they are not directly measured and related to their academic courses. Studies reveal that these activities are important positive contributors to formal programs, so in some countries they are integrated into formal programs. Therefore, this qualitatively study purposed to discover if they affect students’ social and academic developments in Turkey. Results revealed that SEAs increased students’ both social and academic achievements. It is suggested that school leaders organize them more professionally.