The dimension of tolerance is one of the pillars of the formation of democracy, living in a multicultural era it is important to understand the self-assessment of tolerance of young people, or what young people themselves think, how open they are, for example, in categories such as: (I) tolerance of other people’s opinions; (II) tolerance towards a person of a different religion; (III) tolerance towards people of other races. At the same time, it is important to identify young people’s views on the provision of equal opportunities: (I) opportunities for all ethnic/racial groups to receive education; (II) employment opportunities for all ethnic/racial groups; (III) to ensure equal opportunities for women and men daily. To be able to answer previously raised and current questions, the research group organized a survey of young people (students in grades 9–12) in 2017, 2019, and 2023. The survey was organized three times over seven years in the same country, in a particular city with the same target audience – pupils in grades 9, 10, 11, and 12. Thus, the publication aims to identify the self-assessment of tolerance of young people and their changes in the period from 2017 to 2023. The results of the empirical research, comparing the results of 2017 and 2023 comparative perspectives, reflect a decline in the self-assessment of tolerance of young people (tolerance to a different opinion, a different religion, and race) by an average of 12%, while in indicators of equal opportunities provision (equal opportunities for ethnic/racial groups and women/men), the self-esteem of young people has improved by 2%. The results of empirical research obtained may be binding on teachers, parents, students, policymakers, and scientists in the sector concerned to research youth tolerance.