I have a 12-year-old son who has NO German knowledge. We're in the US. He only speaks English. I want him to learn German so attending college in Germany is a realistic option.
My son will have plenty of study materials. What is lacking is the opportunity to just speak German! Probably the only real requirement for this project is that you be a native German speaker, willing to talk to a 12-year-old (and later 13-year-old, etc) in an educational way.