In article the technique of research of levels of formation of ecologically expedient behavior of pupils of elementary school is proved. Certain levels are considered as the characteristic of dynamics of formation of ecologically expedient behavior through awareness of need of the actions and acts (when as the main motive preservation of objects of the nature, reduction of expenses of natural resources in daily consumption, ecologically safe way of life acts). Diagnostics is carried out by means of different methods: interview, questioning, conversations, solution of problem situations, pedagogical supervision.