Being in the front almost forces you to stay alert and keep your attention on the teacher, so he made the right switch.

What I would do would ask your teacher in private and explain how important your grades are. When you sit in back, you cannot see properly and cannot afford new glasses. You want to keep your grades up, and you would like to move up closer to the boards if possible. It doesn’t have to be THAT desk, but just A desk that would allow you a better visual assistance would be great.

Also point out that you are a visual learner.

If NONE OF THIS works, talk to your principal. Most schools require that each student is given an equal oppurtunity to succeed, and if you cannot see then something needs to be done.