Hierarchical teaching is a kind of targeted teaching which is in the light of the diversity of different level educatees, and it aims to make educatees of all levels gain the best possible development. This scientific teaching strategy which proceeding from the reality truly reflects the fair of education. In order to ensure the full realization of education equity in hierarchical teaching, it's essential to understand and study the actual situation of educatees in depth, divide the levels and allocate the education resources scientifically, i...