The sociological study conducted in the Gorod Polevskoy, Sverdlovsk Region, has established that the prevalence of maladaptation was 22.3% in children after entering the first form. The major risk factors affecting the severity of an adaptive process are a history of diseases before going to school, nonattendance of organized pediatric collective bodies, disregarding the day regimen and a poor organization of a workplace, bad parental hygienic knowledge. Efforts aimed at preparing parents to organize a child's life in the first form are insufficient and their own steps are inadequate. The parents pay greater attention to the pedagogical aspects of adaptation, by forgetting the medical ones. The teachers and medical workers show a low level of hygienic knowledge of the manifestations of an adaptive period of children's entering school and their professional duties associated with the medical-and-pedagogical provision of this period and self-overestimation of their competence.