one who's never get a chance to go to school

[Ju]

What is the polite way to describe someone who's never get a chance to go to school that's why he/she is unable to read or write.

1. He is uneducated
2. He is illiterate
3. He is unlearned

Are the above expression polite?
How could I make them better in order not to look down upon him?

Thanks

[Tdol]

1 & 3 don't imply that they can't read and write. For me, 2 doesn't sound rude- it would depend on the context and how you deal with the person.

[Ouisch]

If someone can't read or write, there's really no other way to describe them other than to say "illiterate" (even if it does sound harsh). You can soften the description a bit by saying something like "He never had the opportunity to receive formal education, and as a result, he is illiterate."