I think it's an optimization in the world to enable its further progress. If you want to achieve something great, you need to go through adversity that will test you to your utmost capabilities. High school, as it is largely irrelevant, is a great place/time to do it. Treat it as a testing ground so that you can get used to these obstacles on your way to greatness. Then please don't fall into the trap of taking satisfaction in the misery of others that had fun during high school but hell afterwards.