[header] How to be more independent as a teen girl [title] Get good grades. [step] If you and your parents are happy with your grades, keep up the good work! If you feel your grades need improvement, make it known that you are working to improve them. Your parents will be far more likely to grant you more independence if they aren't worried about your school performance. 
[substeps] Try to stay positive; feeling discouraged and defeated will only interfere with your progress. Ask your teachers for help as soon as you notice you are falling behind.