As long as you don't pick a heel that's too high, like pick one that's half an inch or an inch. You don't need those three inch things. Plus, there are a lot of shoes with nice, thick heels. Sometimes they're just something that changes the way someone talks to you. :D
The ones that I went to were really boring and slow. Maybe that's because there were a lot of people at my brothers' school. And the chairs were actually comfortable. But my shoes weren't. I kept taking them off.