It is generally impossible to change your major when you are studying, because you are an art student and your diploma is not a proof of a cultural student. My school is 2 1 1, and even the headmaster's nephew wants to change his major in culture.
If you are really interested in your major, don't get distracted on this road. College is not the only factor that determines your future dreams. How the school operates is just a tool, depending on how you grasp it. You are only a senior three student now, so focus on your current study. Science and engineering can apply for a lot of professional freedom, and it is unrealistic to grasp the current curve to save the country.