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.
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..
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.
I suggest you complete your graduation and start preparing in the initial stages itself according to the syllabus of your respective State.