Teacher

To apply for the post of professor, you need to have a specialization subject which you can choose during your duration of pursuing UG degree. After all, the institute has different requirement criteria, but majorly they require you to have a doctoral degree with a particular specialization.
Most of the recognized universities require you to have appeared and cleared the NET exam after which you are eligible for the post of assistant professor or State Level Eligibility Test after which you can work with the state level universities, colleges or institutes.

If that is where your interest lies, you should follow your fashion.

To apply for the above-mentioned course you need to have completed M.A. / M.Sc. in Psychology / Educational Psychology/Education/Applied Psychology /Social Work/ChildDevelopment/Human Development/ M.A./M.Sc. in any school and having B.Ed. with Psychology/Counseling as papers/
B.A. with Psychology as paper/subject with not less than 45% marks in aggregate from a recognized University.
Admissions are based on the marks obtained in graduation.

To teach economics at the high school level, teachers must hold a Bachelors degree in economics or business, have completed a teacher-training program, and you must be certified to teach in Kolkata.
Some colleges may ask for a master degree in economics.

Nowadays, that is possible only if you have contacts in the institute otherwise NET has become a complusion.

Yes, you can pursue both the courses simultaneously. UGC has given a go-ahead for pursuing 2 course simultaneously

The major difference between SET and NET is that students who clear SET exam are applicable only to particular state universities/colleges for the lecturer post for the state they had applied whereas those who clear NET exam are applicable for all Indian universities/colleges for the lecturer post.
In order to be a professor you need to do your PG and then sit for NET exam conducted by UGC.

Yes, you can start own institutions after working for 2 years in any school or college. It requires a much of deep explanation of the subject with full details. Prepare some points and tips for students, so that the students love your teaching ability.

Hi, if you are in engineering college, then enroll yourself for M.Tech in the domain you have interest. And, if you are in school, then enroll yourself forB.Ed for better career growth.