The India International Science Festival (IISF) is a large-scale national science outreach event organized annually by the Ministry of Science & Technology and Ministry of Earth Sciences, Government of India, in collaboration with agencies such as Vigyan Prasar and CSIR. It brings together leading scientists, technologists, industry professionals, educators, and students through exhibitions, talks, workshops, competitions, and public engagement activities. High school students can participate in various student-focused events, including science exhibitions, innovation challenges, lectures, and interactive sessions, depending on the year’s specific program and host city. Participation offers exposure to cutting-edge scientific work in India, opportunities to interact with researchers and innovators, and a platform to showcase projects or ideas where applicable. The festival is typically free to attend, though travel, accommodation, and selection criteria for specific events may vary by edition.