I am Brazilian, so I certainly empathize with your post. If I was you, I would actually try a different route: Why not teach him how to fix / troubleshoot computers first?

1) It does not require English proficiency nor a diploma

2) It's more fun for kids because it deals with hardware, parts, quick software troubleshooting (instant reward)

3) He can make money immediately by providing services to locals (the internet cafe, the local bakery, etc...)

4) It's a gateway job for customer support or even programming

You could be the sales guy for the local "IT kid", and help him to score his first "contracts" with local small businesses. Then you can coach him in simple troubleshooting, etc...