Why do Japanese students go to juku?

Japanese students attend juku, or cram schools, primarily to supplement their regular education and prepare for entrance exams, which are highly competitive in Japan. These institutions provide targeted instruction in subjects like math, science, and language, helping students improve their academic performance. Additionally, juku offers a structured environment for studying, which can enhance motivation and discipline. As a result, many students view juku as a crucial step toward achieving their educational and career goals.