It doesn't matter how old or young you are, you are both of these things -- a student and a teacher. When our eyes are open to the possibilities, we can learn so much not only from those who are older than us, also from those who are younger. It doesn't matter if you are a high school or college graduate, if you're a doctor or custodian, where you live, your ethnicity, and so on. Everyone can show and teach us something new. We simply need to be open, open to sharing and open to learning.
The side affect, everyone will feel valuable. Listening, sharing, and acknowledging what we learn from others are very positive esteem and social builders!