When I was 18, I attended The American Academy of Dramatic Arts. I did not get invited back for a second year. This used to devastate me. I didn't understand why they didn't think I worked hard enough, and I thought this meant I couldn't be an actor. This heavily set back my career as an actor and in my confidence in my acting ability.
Now look back on that time and my view is a little different. I was only 18. I was fresh out of high school and fresh out of my mother's house. I didn't know I had Fibromyalgia yet I just had heavy unexplained pain and fatigue that caused me to be able to practice outside of class a lot less often as my peers. I had just gone off my ADHD medication for the first time in my whole life. I know this was dumb of me, but I couldn't keep getting it in LA. I never figured out how to get it without my mom's help who lived elsewhere. If you know anything about AADA, you know about the 50-page bios. (I have the demigod mixture ADHD and dyslexia) my dyslexia made IPA for Voice and Speech really hard for me, so there were assignments I didn't do well.
I was also finally out of my mother's house for the First Time. I moved from a conservative mountain town to West Hollywood. I was away from my abusive mom, able to do whatever I wanted in a big city. I went out a lot. I should not have done this, but eh, what are you gonna tell an 18 year old in this situation. I imagine that me using my limited energy for going dancing or to Disneyland every weekend was hurting my ability to practice outside of class as often as I should have.
I'm not trying to defend myself and say that I should have gotten invited back. I'm 24 now, and I'm turning 25 next month. It's been 7 years, and I can finally admit that they should not have invited me back. That version of me was not ready. I was never rested, unmedicated, undiagnosed, and unfocused. I wish more than anything that I waited for now to go to acting school. I wish so badly that I could go back now that I feel like I can truly actually do it well. But I can't. I already did it at 18 and fucked it up. I don't know how I'm gonna get acting training like that again. I haven't properly acted in years so I really need it. I'm gonna have to get an acting class on Skillshare or something.
The moral of the story is do not go to college right out of high school even if you know exactly what you want to do already. Let yourself grow into your adult life first and do it when you're ready, or you will be sorry!