Teacher

It is suggested that you do MTech and join engineering college as a lecturer. You can do PhD during your teaching career. If you want to become a school teacher, you can apply even now. BEd degree will be value add to become a school teacher. By the way as a teacher your salaries will be low in comparison to MNC IT professional. Therefore, you are advised to take decision after lot of due diligence. ( I moved to teaching after 35 years in IT therefore I am asking you to review your decision before taking action)

It is an exam that you have to give for lecturership in senior college.
Eligibility :
1) You must have 55%+ ( B Grade ) at least in M.Com ( you can give exam after completion of your first year M.Com also. )
It is an Central Government exam. You can give SET exam also ( Maharashtra Government ).
If you passed NET, you can apply for all India colleges for Lecturership and if passed SET, you can apply for all Maharashtra colleges for lecturership.

It is not a mandatory sequence but a preferred recommended career sequence to become a PGT.

He can pursue a degree course in physical education after completing 12th to become a sports teacher.