International Junior Science Olympiad 2025 Registration. International science olympiad registration students interested in participating in iso (all exams) have to complete nse registration at the registration. Registration will be open from 29th july 2025 and end on 20 september 2025.

Registration will be open from 29th july 2025 and end on 20 september 2025. Therefore, along with the first stage of the entire process of selecting the indian team.