Teacher

You should Opt to B.Ed course to become a teacher.

You are advised to do B.Ed and then apply for government schools for the role of TGT. You can also do primary/ elementary teacher training course to seek a job in the government schools to teach primary classes.

You can surely work as a teacher in many junior colleges if you are good in subject and communication skills in English.

Hello Ravi,
Bhatkhande Sangeet Vidyalaypeeth is a renowned music institute in Lucknow. You have a very good chance to work as a music teacher in KV Sangathan.

Hi,
You need to clear your Bachelors and Masters courses. After that, you need to give UGC NET exam. Ideally, you can become a lecturer at the age of 23 if you clear all the exams in the first attempt.
All the best.

For becoming a lecturer, you must do UG, PG M.Phil, and clear NET, SET etc. You must be specialized in one particular subject.

Hi Darwin,
It will depend on what you want to to teach. If you want to teach Chinese in a US school, then you can learn Chinese. Common sense says English is the first language so you must be very good in English not only to become a lecturer but to survive and to get any job in an English speaking country like USA. How many years will depend on your background and experience.

Hi,
You will have to complete your graduation (3 years after 12th) then you will have to pursue Master's degree (2 years after Bachelor's degree). And then you will have to clear UGC NET exam which can take one single attempt or even a lot of attempts so that totally depends on you. But after 12th a minimum of 5 years will be compulsory and then depending on when you clear that exam, you can become a lecturer.
All the best.