You can learn everything, and more, by not going to music school. If you have bad teachers, like we had, you'll not learn very much. For example, there was once a teacher who hated his position because he thought he deserved to work at a better school and with better pay. He would sometimes not show up to teach, or show up drunk, and if he did show up he would insult the students saying that this was "so easy" for him and accused the class of being stupid for not understanding. He groped some of the female students and was a major homophobe that at the end of his contract, he peed on a gay professors office door. You can imagine what the professor thought when he saw the yellow liquid running in from under the door, and then opening the door to see him zipping up.
My point is not only to entertain with this true life story, but also to warn you that music school can be a huge waste of time if you aren't there for the right reasons. If you're there for a degree, you should quit piano now.
However, some things I learned to do that would not have occurred otherwise was to learn how to sing. We had a very good voice teacher and it seemed she could perform miracles on even the worst singers. I still sing now because of her.
As well, you could also meet some really talented people whom you may become lifelong friends with. Or not. The social aspect of music school was very much and eye opener for me.
Anyway, it sounds like you have technical problems, musical problems, or probably both. You'll need to figure out how to remedy them if you want people to think you play well enough to be accepted.