Religious education (RE) is a persistently "hot topic" in contemporary Spain. Although nominally Catholic, majority Spanish society tends to be sharply divided with regard to the issue of religion in education: more conservative and Church-attending parents approve of the still overwhelming presence of Catholic teachers, trained and chosen by the Catholic Church, who teach (confessional Catholic) religion in both public and confessional primary and secondary schools. More liberal or progressive parents reject this "intrusion" of the Church as reminiscent of "national Catholicism" and favour a strict state-Church separation similar to the French laicite model. This bipolar conflict has become more complex recently. The current dynamics of pluralisation of confessional RE at school, which is currently being implemented in several pilot primary schools in districts with high percentages of Muslim (particularly Maghrebien) as well as Protestant (increasingly Latin American) immigrants, meets strong resistance, not only from the Catholic Church, but also from those who struggle for a completely "laicist" solution. The following analysis of qualitative and quantitative questionnaire data designed and collected in the frame of the comparative REDCo project ("Religion in Education: a contribution to Dialogue or a factor of Conflict in transforming societies of European Countries, sixth framework programme") presents an approach to youngsters' attitudes and experiences with confessional RE. (Contains 15 notes, 1 table, and 1 figure.)