Those students who passed their Board exam in 2018 and want to join any of the IIT's or ISM Dhanbad should have got at least 60% marks in their 12th Board or equivalent (55% for SC/ST/PwD candidates).
However those candidates who are appearing in their Board exams for the first time in 2018, the eligibility criteria will be "top 20 percentile of the successful candidates" in their Boards, category-wise. This will be a one-time exception for JEE (Advanced) 2019 only.