Have him get a degree or trade skill in something non aviation related. No jobs ever require an aviation specific degree, they just want a college degree (if any). Majoring in something other than aviation will give him a fall back career.
How does the career look? Supposedly there is a pilot shortage coming. China, Indonesia, and India are just beginning their aviation booms. The shortage will hit those places first. There are a lot of upcoming retirements at the US airlines which will create lots of demand for pilots. However if oil jumps back to $150/bbl, I don't think the shortage will appear as airlines will begin parking aircraft, and lose money (again, 2008-10 all over again).
If he is going to learn a foreign language make sure its Mandarin Chinese.