The Japanese high school system typically includes three years of education for students aged 15 to 18. It follows the completion of junior high school and is not mandatory, although most students continue their education. High schools can be categorized into different types, such as general high schools, vocational schools, and specialized schools, each focusing on various academic or practical skills. Students in high school often take a wide range of subjects, including mathematics, science, literature, and foreign languages. The school year starts in April and ends in March, with breaks in summer, winter, and spring. Entrance exams are common for students wishing to attend competitive high schools.