Hello,

If you want to join the CBI department then you have to study good. And it's good to see your future goals.

You have to study hard in 12th in arts or commerce or Science stream. Then you have to graduate in any degree which is 3years or 4 years. After that you have to given the UPSC examination to join the CBI branch and become a IPS officer. Otherwise you can give SSC CGL Examination for become a sub-inspector in CBI. So you have so many options. But you have to study hard for your Examination and physical fitness also matter.

All the best.