The multiculturalism of Finnish society is under intensive discussion. Part of this debate deals with girls from migrant backgrounds and their position within and outside the family. At the same time, international research on girlhood and migration shows that public discussion about girls from migrant backgrounds is often linked to sexual rights, sex education and gender equality. In this article, the author asks how complex generational and gendered relations are understood and taken into account in sex education, and how questions of morality are linked to the neutrality of sex education. This is done by using the concepts of exceptionalism and sexularism. Exceptionalism, in the context of sex education, refers to the tendencies that support the Nordic education system as universal, equal and exceptional, and sexularism refers to debates that connect 'Western' ideas and practices of sexuality with progress, emancipation, reason, pleasure and freedom. The article is based on the author's ongoing research, which combines debates from post-colonial and youth research. The analysis piggybacks interviews conducted with young people aged 13 to 18 (n = 33) and professionals (n = 21), as well as material consisting of 18 health education textbooks used in Finnish upper secondary schools.