"야자" refers to the practice of studying late at night, often in a group setting, commonly found among students in South Korea. The term is derived from "야간 자율 학습," which translates to "nighttime self-study." This practice is popular in high schools, especially during exam periods, as students gather to review materials and prepare for tests. In addition to its academic purpose, 야자 fosters a sense of community among students. They often share resources, discuss difficult subjects, and motivate each other to stay focused. This collaborative environment can enhance learning and improve academic performance, making it a significant aspect of student life in South Korea.