Should I go back to school or get more experience?

You are weighing school against experience and can't tell which actually moves you toward your goal. That is a good question to be stuck on, because it means you are thinking about the destination, not just the next step. Most people skip that part. The honest answer depends on what your goal actually requires. Some doors only open with a credential; others only open with proof you can do the work. So look at the people already where you want to be. How did they get there? If most walked in through experience, school may be an expensive detour. If most needed the degree, experience alone may stall you. Don't decide in the abstract. Find three people doing the job you want and look at their real paths, or ask them directly. Let their route inform yours. You are not choosing between school and experience in general. You are choosing what this specific goal demands, and that is a far easier question to answer.