I don't think a lot of Olympics gold medalists are taught by former Olympics gold medalists. Most teachers never go on to accomplish what their students achieve

I don't think a lot of Olympics gold medalists are taught by former Olympics gold medalists. Most teachers never go on to accomplish what their students achieve. I think OP has a fair chance of giving the nephew a great start - and whether that leads to Jobs level of accomplishments will depend on perseverance and luck.