when people look at you, do they tend to think you are older, or younger, or about the same age you are?

when people look at me, people always think I'm younger- people tend to ask me what I'm studying at school or if I'm planning to go to colledge.

I guess it's because of the way I act, and my limited experience in a lot of things (including my vocabulary)

so when people see you, what age do they think you are?