I would have to agree with temptress. You should focus on getting help with your studies. Graduating is very important. However, making sure you are equipped with the necessary knowledge to support yourself outweighs graduating "on time". Depending on your SES and what school you attend, you may qualify for supplemental educational services. Maybe you and your parent should speak with your school counselor to see if you qualify for tutoring or special placement.
prob not... unless you really find a good way to fool the system or actually get some help since you really seem to need it bad!:(
There are all kinds of support groups that help...find one in your area...ask the board of education usually they can point you in the right direction.
Hope this helped.