Freud's psychoanalytic theory emphasizes the role of the unconscious mind and early childhood experiences in personality development, focusing on five psychosexual stages that shape behavior through unresolved conflicts and drive motivations. His concepts of the id, ego, and superego illustrate the structure of personality and interactions that influence behavior, while his theory highlights the importance of understanding emotional and social growth in educational settings. Educators can apply Freud's insights to identify underlying issues in students' behavior and foster a supportive learning environment.