Hello,
Student every state conduct examination for the job in various position of Police. The minimum eligibility criteria is Graduation, so as you've passed class 12 you should take admission in graduation and complete Graduation. After completing your graduation you can fill the application form of State level government job examination for the recruitment of Police.
ELIGIBILITY - Candidates must passed Bachelor’s Degree in any discipline from a recognized board.
Feel free to comment if you've any doubt.
Good luck
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