@Serena Inkwell
I'm sorry. But you have too little backstory. Your backstory is non-existent, nothing to go off of. Not a thing, and we need those details to have even the slightest meaningful conversations with your character.
The personality is rather empty, and needs to be expanded upon to create a more engaging character. Two personality traits are simply too meager I'm afraid. We need more. Sorry but being shy -dreadfully so- isn't enough. You need more personality traits.
If your personality is fleshed out, we can let your backstory slide past. Otherwise, we will need both of them. Speak of your backstory again, if you do intend to write it. I recommend you do, because it breathes life into your character, gives them a drive, a will, dare I say it, but a soul. It keeps other people engaged, which benefits both you and your fellow RPers.
Also, a change with your age is in order. This is a high school, not a college, nor a university. We 'teach' up to 18, not up to 21. I'm sorry, but you need to age your character down a little bit. I suggest 4-6 years down.