Hi aspirant
The eligibility criteria of IISER is :Those who have passed 10+2 in 2018 or will pass in 2019 are only eligible through three channels:
1.JEE Advance
2.KVPY
3.SCB: IAT aptitude test.
You are not eligible for any of these.
Visit the official website to check the eligibility: https://www.iiseradmission.in/eligibility/
Hope this was helpful.
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