I am sorry to hear you having such tough time right now. I know how hard it is to be motivated when under the cloud of depression and especially while trying to get through school too. If you don't mind me asking, what level of school are you in? I might be able to help with school.
Are you seeing a counselor at school, a therapist, or physician for help with the depression? Can you talk with a parent about how you're feeling or even just to ask to see someone? They can help and is seriously something to consider talking to someone.
Sending you the best of wishes in the meantime. Please let me know how you are doing. -Fresia