The paper presents the results of the Children's Rights International Study Project (CRISP) that was applied in Slovenia in 2001 and 2003. The children's right to be heard and be given the opportunity to express their views regarding conditions influencing them is the main emphasis of the United Nations Convention on the Rights of the Child. The satisfaction of this standard requires attention to children's perspectives on the degree to which their rights are respected. Reliable and valid information about children's views regarding their rights are therefore of great value and an essential resource of information. CRISP (Children's Rights International Study Project ) was established to provide a credible, efficient, and effective system for periodically gathering children's views on their rights - including the importance they invest in those rights and the degree to which they are being realized. This program of research has completed a pilot phase in over 20 nations. Besides children's views on their rights, the study also includes parents' and teachers' views on the issue. In Slovenia, the study conducted in 2001 and 2003 included 2869 children and 4068 adults. The sample of children included 1705 primary school students, nine and thirteen years of age, and 781 secondary school students aged seventeen. The adults sample was composed of 2484 parents, 1052 teachers, 342 school counsellors and 182 principals. The instruments used in the study are in the form of questionnaires. They are based on the UN Convention on the Rights of the Child and were improved reflecting what was learned in the pilot stage. The questionnaires are intended for use in various forms appropriate for children aged 8-10, 12-14, and 16-18, and with significant adults who know and influence their life conditions (e.g., parents and school teachers, counsellors, social workers, psychologists, and administrators). It can be applied both for children in school and for those who are not in school. Children's and adults' views on children's rights will be presented in this paper. The results of different age groups of children will be stressed and compared to establish the changes in children's viewpoints that occur with age. Children's viewpoints on their rights will be compared with the adults' viewpoints on the same issues. The comparison will show the accordance and differences in the viewpoints on children's rights between generations. The comparison of the viewpoints of different adult groups (parents, teachers, principals, counsellors) will also be made to present the variability between adults that have different relationships with the children.