IISER Entrance Exam

Hi there, calculating marks from the rank is something that is not possible. You can get somewhat of an estimate but there is no way to know if it will be correct or not. There are some estimators that can be used to get your predicted rank by your marks but not one for vice versa. Your rank depends on your competitors and yourself while your marks depend upon the difficulty level as well. For IAT, rank is way more important than marks. So, don't burden yourself with worrying about your marks or cut off. Your rank matters the most. 

The IISER Entrance Exam 2026 answer key objection submission process is expected to begin in the fourth week of May 2026. The last date is likely to be scheduled in the first week of June 2026. Based on the objections received, the IISER Expert Committee will review the provisional answer keys and release the final answer keys and result, tentatively by the second week of June 2026.

Indian Institutes of Science Education and Research (IISER), the examination conducting body already released the IISER Aptitude Test (IAT) 2025 Student Response Sheet on second week of June 2025. Candidates can visit the official website of IISER and after logging in with their credentials can finally view their IAT 2025 Response Sheet. Candidates can finally tally up their marks scored in the IISER Aptitude Test which conducted in the first week of June 2025. 

IISER is expected to release the IAT 2026 Answer Key in the fourth week of May. Candidates who will appear in the IISER Aptitude Test will be able to check their answers marked for the questions asked and can evaluate their final marks scored. Test takers will get the opportunity to raise objections against the provisional answer keys, in case there is a discrepancy.