Where can I take rhythmic gymnastics classes in NYC?

My Googlefu is pulling up one place, Sokol, that offers rhythmic gymnastics classes to adults, but they don't have a posted schedule yet. Can anyone tell me of other places in the city that teach it to people who aren't planning on becoming Olympians?

If not a full-on rhythmic gymnastics class, what about a place just to learn ribbons? Manhattan is preferable . . .

Thanks,

Lis