This article is an archival contribution to the reassessment of the concrete phases of Roberto Nobili’s education. Here I demonstrate that, contrary to what previous historians repeated, Nobili’s involvement with the College Romano was very short. Moreover, I have discovered that, before joining the Society of Jesus, he studied at the Seminario Romano. Nobili’s school records are the earliest evidence on his life. The article also hints at some possible implications that this specific “Bildung” had on Nobili’s later missionary activity in India.