Today is a hard day

I'm really angry ????!!! The last month I had to do the homework of my friends, I really want to cry. They are so unfair, I work everyday and every nigh but they never help me!!!! I did all the work only because my ratings depends of it.
Thanks for my hard work I be more strong and I think that I can do everything right now!
Stay strong

I'm really angry! Last month, I had to do my friends homework and I really wanted to cry. They are unfair! I work every day and night and they never help me! I do the work because my rating depends on it. Thanks to my hard work, I will be stronger. I think that I can do anything right now!
Stay strong. 

Rating=School Grades?