You did your best.
In the face of all that you must deal with in your life, you earned the highest grade you could.
The chemistry courses which I teach are challenging. But I didn’t invent them. I just teach them. And love them. I’m merely the messenger. I deliver the message of chemistry to you. Lay it at your door. You can pick it up and cradle it and grow it into full understanding. Or you can kick it to the curb. Your choice.
If you earned an A or B in my class, feel proud and hold your head high because you have climbed the cliff and tackled a higher order of thinking than rote memorization: you learned to think. You faced down the impossible and succeeded. I stand in awe.
If you did not do quite so well you likely feel frustrated. Looking for blame. Casting around, pointing that finger. This is understandable, even expected. It is a normal human reaction to disappointment. Let it fester and go ahead and vent: whine and complain to people who will listen, who will nod and rub your back and make you feel better.
Then, take a step back and look at your performance in an objective light and see it for what it truly is: you alone own your grade. Pick it up and take it with you. It will always exist on your transcript. Under your name. You have full ownership. This will become clear as time passes, as your anger fades and your vision clears.
Best of luck to all of you.