Currently being rewritten.
A pony gets his or her cutie mark when they're young, sometime in early grade school. So what happens when you live in a city full of ponies who feel no shame in tormenting you when you don't have a cutie mark in high school? You get Windsong's life.
Poor Windsong has spent her life not knowing who she is or what it is she's good at... other than fighting, which is something she does very well, especially when her classmates decide to crack jokes at her blank flank. After getting in trouble one time too many with the principal, Windsong's parents decide to have her get away from Manehatten for the summer. They send her to stay with her grandmother, Harp Note, in Ponyville. Wind is convinced that it will be no different from her own home, and doesn't have high hopes. After all, who would be nice to a teen blank flank?
This story takes place some years before the first episode, back when the Mane Six were teens themselves, so there will be some considerable differences. Please, be gentle with me. It's my first pony fanfic.
Listen, I don't know why people aren't telling you what they don't like about your story, but I can say that I liked it. And yes, I gave it a thumbs up. I'm at work right now, so I've only read the prologue. Maybe later on during the day I will continue.
However, just from what I can see from the prologue, I think there are some tiny things that can be worked on if they haven't been addressed yet.
For one thing, dialogue doesn't go within body paragraphs. I see you've done that between the conversation with the parent and the principal. Unless it's something super duper tiny, then it is more acceptable (ex. As Rainbow Dash followed Twilight, she couldn't help but muttered "egghead" constantly under her breath.) Dialogue has its own separate lines, which I see that you've done as this prologue continued. So good job!
Also, I think that maybe your scenes can be more descriptive. That will give the reader a better idea of what the environment looks like and the characters that are introduced. Of course, you don't have to describe EVERYTHING, just the important things. Like what you did with the students at the end was fine. They aren't too important, so we don't need to know what they look like. Just like I said, this stuff is the meat of the story. What you've got going on is some bones. So feed it some more words, and you'll be set! If you need any help with anything, you can always contact me.
Im stuck just like you my mane story is stuck on hiatus because i need 3 things time, an editor, a brain tht i lost