That's awesome, good to see kids learning how to work. I do not normally do this and I would like to add that my son has been on a splitter since he was 6, he hand splits and drives a tractor and I let him work with tools, knives and what have you, I think safety glasses are important, like I said I don't normally do this and generally mind my business, but only an observation and am not trying to hijack a thread or anything like that and hopefully this is the last comment regarding this.
PS Have that boy stacking rounds, it will make him strong as an ox.