An educational system where a single teacher is responsible for the overall teaching, guidance, and management of a specific class or grade level.

In primary and secondary schools, the teacher responsible for managing a specific class and providing guidance to students. Also known as [[班主任|班主任|ban1 zhu3 ren4]] in Mainland China.

Teacher in charge of a specific class and its students' overall welfare and management; often contrasted with [[科任老师|科任老師|ke1 ren4 lao3 shi1]].