From PEOPLE Magazine Click to enlarge
It's 8 a.m. on a chilly Saturday, and instead of sleeping in, 13-year-old Isaiah Lombardo is in a white leotard and black shorts, proudly leading a Boston dance class in exercises. "All right, dude!" says Isaiah excitedly, cheering on a fellow student as he points and flexes his right foot. "I like this class because my friends are here. And I love to shake my booty!"

And that's no small feat: Isaiah and his 13 classmates have Down syndrome. For many of them, basic coordination used to be a challenge, but now they spin and sashay, more or less on cue—thanks to Mickey Cassella, director of physical therapy at Children's Hospital Boston, who in 2002 teamed with the Boston Ballet to create the first-of-its-kind adaptive dance program. While ballet pros like Gianni Di Marco teach—offering the class at a nominal fee—Cassella, 67, and other physical therapists lend a hand as the kids spend an hour bending, stretching and bopping to the beat of a drum, ending each class with a group hug—"My favorite part," says Faye Jones, 15.

Cassella delights in watching her 43 enthusiastic students, who range in age from 6 to 19. "They've gone way beyond my wildest expectations," she says. "When I see their smiles—that's everything to me. That's the joy of movement."