[SUMMARY] If the support for the children who have educational difficulties such as no-school attendance or developmental disabilities was too little or too much, there would be a possibility that serious problems which arrest their growth occurs. Therefore appropriate support is strongly needed. 　In this study, a new concept as “optimum support”was introduced, and developmental promoting support that enhance the ability of the children to cooperate with the environment, and that made the side effect of support minimal, and that aiming at a future social involvement was considered. Finally the guidelines for the supporters were provided.