It is time to have a discussion with your parents about what you need and explain that you can only continue living with them if there is a change. This isn’t a challenge — it is a fact. You are old enough to vote, drink, drive, and serve in the armed forces. Coming home at 9 isn’t what will help you grow. You’ve proven yourself to be VERY responsible. Let them know that their well-meaning attitude has to change and be willing to negotiate with them about a trial period and evaluation to help them see you are extending your responsibility in good faith.
If they stick with their approach then it is time to make a plan to move out. Check with your school about rooming possibilities, dorms, and other forms of housing. You may need to take a loan, but your freedom is worth it.