It totally depend on u whether u want to take coaching or not .
If u are a ready to work very hard and study 4 hrs even after school then u must go for coaching .
If u are a slow learner then I would advise to first focus on 12th and then take a year drop and take coaching.

You should join coaching classes if you think that
You can't perform by your school education.

You should join coaching classes if you think that
You can't perform by your school education h