These days if you can get a 9-year-old interested in anything you've scored a victory. Let's hope he stays with it.
I used to tell the students in my museum studies courses that the typical American high school student is interested in precisely six subjects: rock music, automobiles, beer, drugs, sex, and sex. If you and your kid can survive the nine years, you'll be doing just fine. And model building can be a big help.
I think I see a Trumpeter BF-109 and a couple of Tamiya military kits in the background. Are those his too?