Do entrepreneurship education programs (EEPs) really influence participants’ attitudes and intention toward entrepreneurship? How is this influence related to past experience and how does it persist? Researchers and entrepreneurship education stakeholders alike have been looking into this question for quite a while, with a view to validating the efficacy of such programs. The authors of this paper propose to operationalize the concept of entrepreneurial intention and its antecedents in an attempt to address those issues. In particular, we propose an original research design where (1) we measure the initial state and persistence of the impact and not only short‐term effects; (2) we deal with a compulsory program, allowing to avoid self‐selection biases; and (3) we deal with an homogeneous “compact” program rather than programs combining multiple teaching components whose effects cannot be disentangled. Our main research results show that the positive effects of an EEP are all the more marked when previous entrepreneurial exposure has been weak or inexistent. Conversely, for those students who had previously significantly been exposed to entrepreneurship, the results highlight significant countereffects of the EEP on those participants.