In Florida can you legally move out of your parents' house when you turn 18 if you are still enrolled in high school?

Being in high school has nothing to do with the age of majority. If your state recognises that an adult is 18, then you have the right to move out on your own. You also have the right to incur debt, drive, ect. It simply depends on your state's legal age. If it is eighteen, then you're good to go. You are no longer a minor so you can move out if it suits you. A child reaches the age of majority in Florida at 18. There are instances where child support can be extended beyond that point, but there is no 'hook' in the law that say that they have to have graduated from high school before they are considered adults. But then the parents are under no obligation to support them once they have left the home.