Maintaining my grade

A lot of work will be required to maintain my current grade. This means more time and effort needs to be spent on homework and assignments. Also my coursework needs to be completed to a high standard, in order to achieve a high overall grade. In general contribution and effort in class needs to be excellent, as this will be key in maintaining my grade.  I need to show the teacher that i have alot of knowledge about media and certain areas of our subject, which will assure him and her that i deserve a good grade.