Candidates will be admitted to IISER only through 

1.KVPY

2.JEE

3.State and Central board channel (SCB)

Eligibility criteria :

JEE CHANNEL -should have category rank within 10,000

SCB CHANNEL - should have passed 10+2 level with science stream with marks equal or above the cutoff percentage in their respective boards and have to appear in the IISER Aptitude Test.