This study investigates the dynamics of the reciprocal influence of political knowledge and attentive news use. News media are an important source for political information and contribute to political learning. Yet, this process is optimized with increasing levels of pre-existing knowledge about the political world. In extant literature, mutual interdependence is often suggested, but empirical proof is scarce. We propose to conceptualize the relationship of knowledge and news use as an upward spiral. The model is tested on data from a three-wave panel survey among 888 adolescents using growth curve modeling. The results support the model of a spiral of political learning. Interestingly, the influence of political knowledge on news use is estimated to be higher than the other way round.