The article discusses the results of the study of the emotional well-being of 6-7 years old children of kindergartens in Moscow. The data were obtained through a questionnaire survey of children and their parents using the supplemented Children’s Barometer methodology, consisting of 22 questions for a child and 8 questions for a parent. The study was attended by 151 parent-child couples; children from 15 groups of 5 different preschools. Emotional well-being is based on satisfying the needs of the child, both basic and essential for the age at hand, and essential for personal development including personal relevance, recognition in the group, autonomy and initiative. It was important for us to hear the “voice of the child”, attitude towards kindergarten, what makes child happy and discomforting. It was found that children of 6-7 years old can express their opinion and attitude to what is happening in kindergarten. Organized forms of activity are less interesting for children than free activity; there are discrepancies between children’s and adults’ assessment of issues important for the child; children remember conflicts in kindergarten and it is important for them how the teacher resolves the children’s conflict. The educational environment and style of interaction between adults and children in groups implementing different pedagogical systems influences children’s attitude towards kindergarten, which was shown in significant statistical differences.