They're not the best race boot ever, but they'll work just fine. They are pretty torsionally soft, while race boots are intentionally stiff from side to side in order to transfer energy into the ski from side-to-side flexing as well as just forward and backward. This is only really important when you're skiing a really stiff, aggressive ski, like a world cup race ski with two sheets of metal. However, I would say that if you ski only park and you're just racing for your high school team you'll be absolutely fine. You would be better off with race boots, but it's not going to make that big of a difference, and there's no need to own two pairs of boots. A stiffer tongue would probably be beneficial, but not necessary. And racing is still just skiing; you won't do any damage to your boots by racing in them.
Just as long as you're not chasing medals or FIS points or anything, you shouldn't have any problems.