hi sudhir,

yes,you've to clear to get admission in IIST.before jee advanced,please be sure of these things,

• the candidate should have atleast 75% in their +2 board examination
• the candidate should have given jee mains

the IIST Admission will be based on jee advanced score only, you'll have counselling according to your score.to know more,refer following links:

• https://engineering.careers360.com/articles/iist-btech-admission
• https://www.iist.ac.in/admissions/undergraduate

all the best!

note:if any links available,copy and paste it in the url bar of your browser.

I Hope this information will be useful to you.

if you need additional information,let us know to help you.

Thank you!!!:)