Such a teacher is a far-sighted teacher, and students' sustainable development is guaranteed to a certain extent. Third, school teachers must have the ability to control the hysteresis effect in a timely manner. Many delayed effects are independent of human will and are sporadic and sudden. For example, the outbreak of the SARS epidemic was unexpected by many people. However, it is of great concern whether the hysteresis effect caused by this can be controlled in time. Beijing took decisive measures to prevent the further spread of SARS, which not only promoted the stabilization of social order, but also greatly promoted the reduction of economic lagging effects. Will such "SARS" incidents occur in schools? It's hard to say. However, such sudden and accidental hysteresis effects will also occur. For example, group fights among classmates may have serious consequences if not handled properly. Safety problems during outings may also produce serious hysteresis effects, etc. In short, school teachers must do a good job in preventive work to prevent the occurrence of various hysteresis effects.