You are going in the right direction as you want to become Political Science professor. You can build up a career in teaching after completing your Post Graduation in Political Science (securing minimum 55% marks) along with you must do B.Ed/M.Phil for good placement. After B.Ed you can be a school teacher and can’t teach in colleges or universities. You can start teaching in various colleges, universities and professional institutions by giving National Eligibility Test (NET) exam after completing your masters.
You can opt for these degrees either through distance mode or part time.
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All the best !!