Buke (Chinese: 补课; pinyin: bǔ kè) in the high schools of mainland China refers to the social phenomenon of extra study for the improvement of students’ academic performance in the Chinese National Higher Education Entrance Examination (commonly known as Gaokao).

A student’s score in Gaokao is the main standard for admission to university, and the competition has intensified over the years.

[5] Being admitted to a top-class university is considered as the ultimate success for students, at least in teachers' and parents' views.

[8] Almost every year, the Ministry of Education of the People's Republic of China issues official documents which emphasize the prohibition of any forms of Buke organized by state-run schools.

[10] According to a clerk working in an educational establishment, the teachers in Wenzhou no longer attend extramural Buke after the implementation of the disposal options.