This thesis examines the connection between the attitude towards the Croatian standard language and the success in mastering it. The research presented in the thesis was conducted among 100 students of Croatian studies and non-humanities studies. The aim of the research is to understand the influence of positive and negative attitudes towards the Croatian standard language on mastering the norms of the Croatian standard language. The thesis is based on the analysis of relevant literature, and the research is based on the results of the survey questionnaire. The results of the research showed a connection between a positive attitude towards the Croatian standard language and a high level of mastery of it. People who have a more positive attitude towards the standard language are more willing to invest more effort in adopting standard language norms, which usually results in better mastery of the standard language. On the other hand, a negative attitude towards the standard language means less diligence for language norms and lack of motivation to develop language skills, which is ultimately reflected in a reduced level of mastery of the standard language. The thesis emphasizes the importance of a positive attitude towards standard language as a motivating factor for successful mastering of standard language norms. The development of a positive attitude towards the Croatian standard language is insufficiently represented in national curricula and national learning plans and programmes. Understanding the influence of attitudes on the mastery of standard language norms contributes to the development of better pedagogical strategies in the educational process and affects the motivation of students when mastering the norms of standard language. In this context, this thesis presents the results that confirm the influence of attitude and highlights the need to develop the awareness of pupils and students about the importance of the influence of attitude on the mastery of standard language.