To appear for JEE Main, candidates must have passed or be appearing in the Class 12 (10+2) examination with Physics and Mathematics as compulsory subjects along with one of the following: Chemistry, Biotechnology, Biology, or a Technical Vocational subject. Students who passed Class 12 in the last two years or are appearing in the current year are eligible to apply. For admission to NITs, IIITs, and CFTIs, candidates generally must also secure at least 75% marks in Class 12 or be in the top 20 percentile of their respective board examinations, though this requirement may be relaxed in certain years based on government decisions.