from what i've seen, when you get into your twenties your body will change... i had a friend that was a bit like you describe, but he was taller than me so about 6' and maybe 200-250lbs but everyone made fun of him - now he's really good looking and married

how you see yourself means alot more than you think it does!
its hard to see yourself different when everyone is telling you what you should look like, it doesnt matter what you look like as long as your happy... you can do anything you set your mind do and dont let anyone tell you other wise

kids are mean and they say things just to say it, if you feel you are being harrassed though maybe you can report it to the teacher or principal or something.. because i've seen kids do things i would put them in juvy for if i was an adult and seen that stuff...

you definitely are smart and thats something you should use for your advantage, being smart does bring social anxiety somtimes i think... i was always in advanced classes and i think its great to pursue the best education you can...

i think you are like me and you think about things alot, you think about them tooooooo much even... i know i over-analyze everything... but im trying to learn even today that i dont have to do that... you can just be yourself, when you start to get nervous thats whn you tense up and maybe you do things people notice - i do super weird things when im nervous, like i play with my hair.. i have long hair btw... my hair is like... almost to my butt?
but if you are just being yourself you wont worry about those things and you'll just have fun...
it might take practice because i know social phobia isn't something that you can just get over, like i said i still have it.. but its better, i can talk to people and stuff...
you can do anything you set your mind to you know?

sorry my adhd - i will stop rambling, i just want you to stay in school and get a ggood education!!!!!