If it were me, I'd probably be sure the kids are seriously committed to the hobby. If they are, then follow the advice given by every seasoned breeder I've ever met, ever talked to, or have ever heard speak. They all say the same thing and I'll repeat it here. Buy a trio or quad of the very best birds you can buy. Or, buy a box of 9 or 10 chicks of the very best birds you can buy.
It will take all kinds of skill to breed great stock to be truly "show quality". That's a weird term. When you get started, you'll get some birds and there'll be generations of work to do, even if you start with the very best. It takes alot of work and there's an endless amount of learning to be done. The work is never done.
But if you start with hatchery stock? No. There may not be enough years in a person's life to "fix" hatchery stock and may never be possible if the genes just aren't there. There are a dozen or more folks with really great birds, that I know about, and even more that I don't know about. Get the best. Or just get hatchery stuff and enjoy them for what they are. Fun, egg giving, curious and interesting creatures. Best of luck to you.