How do you deal with people who do what they want but complain about what you do?

My teacher kept telling me that I’m bad student all because she threw her mom down stairs and she disabled. Am I a bad student?
Why do we struggle for money every day?
What is one vital life skill young Indians should learn outside of formal education to navigate today's world?
Why is it important to recognize the difference between standard English and American standardized English when you're talking about the two different countries?
What makes some teachers more trustworthy to students when it comes to sharing personal problems?