It depends on the rest of your grades. To figure this out you can figure your GPA. Each grade is given points. An A is 4 points, B is 3, C is 2, D is 1, and a F is 0. Add up your grades using the grade points for each, then divide by the number of grades. This will give you a GPA. Anything below 1.0 is an F GPA. I would suggest that you have begun to worry about this late in the year and since your grades are low you didn't learn what you needed for 8th grade. Because of this you will need to work harder in 8th so you can go on to high school.