Dear Aspirant,
It is quite hard to predict the exact situation as it depends on the number of students attempting the exam and the number of students willing to take admission in the course.
There is a total of 1734 seats in all IISERs combined and about 1300 seats are reserved for the SCB category of students.
Hence, you'll easily need a rank below 2 K to get into IISERs if you belong to the general category.
If you belong to the general / OBC category it is quite difficult for you to get admission into IISERs.
You have a decent chance of you belong to the SC/ST category.
So, please keep other options open.
Hope this helps.
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