Behaviorist learning theory is one of the most influential learning theories in the field of educational psychology, both in the present and in the past. Behaviorist learning theory places great emphasis on the role of environment and experience in shaping individual behavior. This paper discusses the principles of behaviorist theory, its implications for education, and its advantages and disadvantages. By understanding behaviorist theory, teachers can develop effective learning strategies to promote desired behaviors and reduce undesirable ones. Research also shows that behaviorist learning theory remains highly relevant in modern education with various modifications adapted to current developments. The implementation of behaviorist learning theory is most effective when used to shape basic behaviors, combined with other learning theories, and adapted to the characteristics of students. This paper also contains definitions of behaviorist learning theory according to several experts, including: Thorndike (1911); Watson (1963); Hull (1943); and Skinner (1968). This paper also explores the contributions and limitations of various behaviorist approaches, as well as their implications for contemporary educational practice.