Add to ORKGThe aim of this diploma thesis is to introduce the problem of the classroom climate of the first grade at primary school. Classroom climate is a complex phenomenon and process and is subject to many influences, which are described in more detail in the theoretical part of this thesis. According to the literature, a key role is played by the teacher in the formation and influence of classroom climate. The practical part is aimed at the teacher ? it presents the results of interviews conducted with experienced first-grade teachers. The results show how addressed teachers define the concept of classroom climate, how it is diagnosed and further developed. The teachers also described the climate of their current classes and their opinions were c...