Please note that IPS, is a form of Civil Service exams conducted by the UPSC board.
For someone to appear for Civil Service examination, one needs to be a Graduate. For other criteria check:
Apart from the requirements, one needs to be well read, must be able to articulate what they read, must be logical but not argumentive, at the same time must stick to their opinion.
iRead every topic right from politics to history to sports to events, etc.
Get into the mode of Group discussion with friends and or teachers
Hope this helps
Wish you good luck....