Help please! little brother problems?

my mom is thinking about taking a job somewhere else and my little brother is feeling a little uneasy about it hes 14 and a freshman but he is 6'5" and here in this small town were he grew up everybody use to him but now he is freaking out about being made fun of because he is so tall and im like dude ur 6'5" your more than likely not going to be picked on but now im starting to rethink it and don't know what to tell him.