High schools in Japan, known as koukou, typically last for three years and cater to students aged 15 to 18. They offer a range of academic and vocational programs, with many students preparing for university entrance exams. Admission often requires passing an entrance exam, and schools may have specific entrance criteria. Japanese high schools emphasize discipline, respect, and teamwork. Students wear uniforms and participate in various extracurricular activities, such as sports and cultural clubs. The school year starts in April and is divided into three terms, with breaks in summer, winter, and spring.