The goal of this paper is to try to answer following questions: To what extent does mathematics teaching develop key competences of students? Are trends of student's key competences development implemented in current education so that our school graduates stand the European competition? We searched for the answers in a survey and in this work we want to present the results of the study. In the introduction theoretical resources are described, the term 'key competences' is defined and system of mathematical key competences is outlined. In the next part of this paper we follow the survey offering answers to asked questions. Goal of the survey is presented, hypotheses are set and applied methods are characterised. We deal with survey realisation and quantitative and qualitative evaluation and we introduce possible improvements.