Hello,

The admission to IISER is done through three channels- KVPY, JEE Advanced and SCB. IISER Aptitude test is for the candidates who apply via SCB channel.To apply though KVPY channel the students should be eligible for KVPY fellowship.The candidates who have a valid JEE advanced score can apply through JEE channel. Candidates can apply through all the three channels but should satisfy the eligibility criteria mentioned for each channel.

To know more visit the link below : https://engineering.careers360.com/articles/iiser-admission