Dear Applicant,

I hope you are doing well.

Teaching is indeed a noble profession, teaching and nurturing young students can be a very beautiful job in life.

School level:

To be a teacher at school level upto 10th class you need a bachelor degree in any specialization. Like science.

Not necessarily you have to do BA to be a teacher. With science you can also be a teacher in science or maths etc..

HSS level:

To be a teacher at this level you need graduation degrees + a B.ed degree that is for a fixed post + good experience.

College level :

To get post of  Associate professor  you need graduation + masters + P.hd for fixed post .

With masters degree and clearing exam like neet set you can be an assistant Professor in college level.

Hope this helps you.

The state respective public service commission conducts exam for various government teacher level which are 1st grade ( For which PG is mandatory) . However for 2nd and 3rd grade (Minimum Qualifications are -. A graduate level degree in your concerned subject and B.Ed with 50 percentage)
I suggest you complete your graduation and start preparing in the initial stages itself according to the syllabus of your respective State.