Your question stumped me. Schools with 660 points should be in the top 20 in the country, right? Can you ask the teacher? Take the initiative to ask the teacher that your present grade is not your ideal grade and ask what can be improved. Netizens can't help you, and they are not familiar with all aspects of you. Go and communicate with the teacher, and the teacher will be happy to tell you. Ask him to help you analyze which aspects of each subject are weak and which aspects can be improved.