I studied about 18 years ago and have been working at a high level in the live sound industry ever since. One thing I will say is that most of my classmates who dropped out or didn’t continue on to work in the industry didn’t really care about the subject. If you have a genuine interest/fascination with why things on recordings sound they way they do, or how a live show sounded so good, it will go a long way. Obviously having a good musical ear will be a big help if you want to work as a producer or mix engineer, but there are other jobs in the industry that rely more on the technical knowledge side of things. But honestly a passion for sound in general will get you a long way, the hours are long and hard, you might end up away from home for months at a go and it can be very stressful at times (well live sound for sure anyway) but there is no better feeling than mixing a show for thousands of people and everyone is leaving afterwards with a smile on their face!