Hi there,
Hope you are doing well. In order to score more than 95% in 12th class, you need to work hard. You should practice all the concepts thoroughly, and at the same time you need to focus on the competitive exams preparation. The main subjects you need to focus is Physics, Chemistry and Mathematics. Because these marks serve great importance in case of competitive exams. But English is also very important subject, considered as the scoring subject. It is easy to score in English if you have a good knowledge of grammar and lessons taught in class. I hope you understand after reading this answer.

All the best.

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