Yeah, I had the same problem the last four years in Secondary School. My resource teacher told all my teachers to put me sitting at the front which I felt was really unfair as although I was easily distracted I felt more put down by this action so I concentrated even less. I'm now in Leaving cert and teachers let me sit where I want...mostly
There's still one poor soul who thinks I need to sit at the front.
There's not much I can advise as I did nothing about it myself. Maybe if you have a resource coordinator or a base teacher that you can trust you can talk to them about it and see what they think. It depends on their reasons for putting you in the front and your relationship with the teachers. For now, just try and get on with your school work as best you can and don't let them get to you. They're only trying to help (most of them anyway) even though sometimes they get it terribly wrong xD