It is really appreciable that you are very conscious about your studies. In order to be perfect in your academics you should,
• Concentrate your own studies,
• Practice the concept or topic rigorously,
• Take your own weekly tests and have their correction by somebody else,
• Use techniques to memorize the definitions or terminologies,
• Teach anybody else of your grade level who needs help
• Pray from Allah (SWT) to help you in improving the result.