Recent political socialisation research focuses almost exclusively on the orientations of adolescents, even though the literature seems to agree on the assumption that politically relevant orientations and attitudes are acquired much earlier in the life span. This article argues that it is essential to look at the beginning of socialisation if we want to shed further light on the processes underlying the development of democratic citizenship and therefore looks at children aged six to eight years. It examines the influence of primary school institutions on children's political learning by looking at three important school contexts on children's political knowledge, (1) teaching, (2) class, and (3) school context. The empirical analyses draw on data from a German study that includes several hundred children at the beginning and at the end of their first school year, as well as their teachers. Even though individual factors can account for a good portion of the variance, school factors are also important but depend on the respective knowledge domain. The findings can contribute to the ongoing discourse about a broadening of children's political and civic rights and are meant to trigger a discussion about a re-orientation of civic education in primary school.