Teacher

You need to have a strong command on your maths and do regular practice because practice makes the man perfect.

No, its not all necessary on rely on coaching for 11th and 12th, you can prepare at home. You just need to dedicate yourself for regular studies. Daily revising the concepts and giving importance to difficult concepts as per you. Perform well for periodic school exams. You can score good with self study alone.

Hello Rapolu Yugandhar,
You are eligible to apply for NET exam to pursue your career further as a lecturer.
You can check the below mentioned details:
https://www.eduncle.com/csir-net-exam
Best of luck.

MSW students are eligible for FPM at IIMs and other B-School on the basis of educational qualifications only.

A minimum percentage is 55+ in PG. Later, you have to qualify in NET. It is very good, if you have a PhD and research publications. Qualifications are similar Degree and PG colleges and Universities, governed by UGC scales.