If they are old enough to walk, they are old enough to teach to ski; at least that's the theory. I would assume they have to be potty trained so they won't stick to the snow. Most ski schools won't take youngsters before the age of four or five, but my wife and I started our kids skiing as soon as they were two-and-a-half. All four took to it like fish to water or otters on a snow slide. When they learn at this age, it will be a lifelong sport. Congrats to Sunburst for their forward thinking.