Ageism in modern society seems to be internalized in childhood and reinforced in adolescence. The aim of the research was to show the stereotyping of the elderly among adolescents, based on a foreign survey questionnaire adapted to the cultural specifics of Slovenian adolescents. We performed a bivariate analysis on a sample of 188 students in the Slovenian Savinja statistical region and found that ageist stereotyping among adolescents is related to their joint household with an elderly person. The negative attitude towards the elderly could be improved among adolescents through formal and informal education about age and aging in an intergenerational environment which also includes the family.