Praise her for success at each step. Consider implementing a small reward system, depending on her age, for completing assignments and getting good grades. If she doesn't respond to your help, or you find yourself battling over schoolwork, consider bringing in a tutor (try a local high school or college student). Children often respond better to an outside person who is not mom or dad. Continue to encourage, reassure and praise her for her efforts and success.

In addition, talk to her teacher and/or school counselor and ask them if they have any concerns. If there are bigger issues than just her negative attitude at home, you may need to enlist professional help.