How old do you need to be?

Hi I'm Alekhya Voleti, I am a sophomore in high school right now in Sacramento, CA. I'm taking my fourth year of Spanish in school and I really love Spanish and learning about Spanish/Latin American culture. I really want to volunteer in Mexico during my Christmas break. I can volunteer up to one week and if there's any opportunities in Puerto Valletta for teaching underprivileged kids English is something I'm very interested in:) Thank you!