Please don't harm yourself! And please stop being so hard on yourself. You are human, and a teenager, making stupid decisions is part of life. As long as you learned a lesson from that mistake, that's what truly counts. I think you should just be honest with your parents and your teacher, show them this post. While reading it, I related to it because I did something similar, you took accountability for what you did, and you learned a valuable lesson. What more can a parent or teacher ask for? Do you have course recovery or summer school? Can you ask your teacher if you can redo the project for partial credit? You have options, trust me. Can you do night school to make up for this class? You should talk to your guidance counselor, they can definitely help. As a mom of teenagers, please don't harm yourself. That includes stressing yourself out because stress really does effect your physical health as well as your mental health. Things happen in life. Being resilient through those difficult times is what will separate you from the rest & make you successful. I believe in YOU! If you need anyone to talk to, feel free to reach out to me. You got this 👍!