This case study examines the physical, cognitive, emotional, and social development of a 10-year-old boy named JM. It observes JM in his classroom at John Dewey School for Children. JM lives with his mother and younger sister while his father works abroad. The study finds that JM shows normal physical growth and motor skills for his age. Cognitively, JM is able to solve problems and complete tasks as expected for his concrete operational stage of development. Emotionally, JM interacts well with his peers but lacks sensitivity at times. Socially, he is friendly and enjoys team sports, exhibiting developmentally appropriate independence and social skills.