While working, Puri continued to study. After his primary education, he joined the National School of Drama in Delhi to study theatre acting. A fellow NSD student who became a long-term friend, Naseeruddin Shah, encouraged Puri to follow him to the Film and Television Institute of India in Poona (present-day Pune). In an interview with "The Times of India", Puri later recounted his family was so poor that he did not have a decent shirt to wear when he joined FTII. According to Shah, Puri was disappointed by his education at FTII, and also was unable to pay tuition fees—when he became well-known, the institute followed up the debt of ₹280, which Puri refused to pay due to the "impish thrill" of owing them money.