Talk to your parents about the shoes. Ask if they can get you a cheap pair you can wear on your way to school. Yes, the shoes do. I lived on the street for four months as a teen. I saw this stuff happen daily, because I was looking out for myself. It's awful. One of the first place to look at to get the level of wealth of a person are the shoes. I always wear shit looking Doc Martens because back then because they were great shit kicker shoes. The worst I ever got was a compliment on how shit kicking they looked. I still have them. They last for ever.
Do you have any baggy pants that can cover your shoes? (seriously, your half my age. Styles change. Elephant Pants were what was in style back then. Last summer in Grenoble all I saw were women wearing the baggy pants that tied down at the ankle. It was tight rocker for most of the rest) If you do, consider that being your "go to school" pants which you can change out of when you get inside the school. Otherwise consider altering your Jordans with a decal of a cheap brand using stick-on velcro. That way all of it can come off, there's no sewing involved. These are just off the top of my head these ideas. They might suck. They might be the stepping stone for you to get creative and gain control. Your school has been targeted because it is a middle class school. There isn't the possibility of a jedi mind trick, so instead, make your shoes look like the Millenium Falcon. Basically, a piece of junk. A very good piece of junk.
LD