NSEJS stands for the National Standard Examination in Junior Science, and it's the first stage of selection for the Indian National Junior Science Olympiad (INJSO), which in turn leads to the International Junior Science Olympiad (IJSO). Organized by the Indian Association of Physics Teachers (IAPT) in association with Homi Bhabha Centre for Science Education (HBCSE), NSEJS is designed to identify and encourage talented high school students in science.