Replying to How old is too old for Windells ski camp?

When i look at videos from windells i always see little kids that are just learning park and teens that are sponsorship material. Are there older kids that go that happen to be beginners? Or is it "don't go if you are 17 and can't backflip". If anyone can enlighten me that would be appreciated. My 16 yr old brother is thinking of going there this summer and cannot even slide a box properly. Should he go somewhere else?