Hi,

In jee main exam ranking is made on the basis of percentile. Percentile measure how good is one candidate from the other who have appeared for the same exam. The marks which one obtained actually in the papers will be treated as raw scores. Form the raw score percentile will be obtained for each attempt.

For preparing the final rank /merit list Among the January and April session the percentile of the candidate in which is higher is taken not the raw score.

So it is the percentile through which ranking will be decided not the score. Hope you understood.