If you wish to take admission to the course of Bsc Programming and Data Science program after 10+2 then you need to qualify the JEE. But if you wish to take admission to the course without JEE, then you need to get enrolled in some UG course and on the 2nd year of the course you can apply for the course. Also after completion of your UG course you can also pursue for the course through direct entry.

For more information regarding the course visit the official website or consider the link below:

https://www.iitm.ac.in/happenings/press-releases-and-coverages/admission-iit-madras-bsc-data-science-program-now-open

I hope this helps. Wish you a great eve!