A head-teacher is the educator, organizer and leader of a class. Not only the quality of his work decides students'well-growing in body and mind, but also affects the whole administration.

班主任是班集体的教育者、组织者和领导者，班主任工作的质量不仅决定着学生身心的健康成长，也影响着学校管理工作的大局。

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"Not if they are dumped in a class untrained - and again that depends also on the enthusiasm of the teacher and the head teacher, " she said.

BBC: Delay as language learning dwindles