I am looking for a list of quilting classes in New York City the
weekend of February 22-23.

Just a side note - from my own experience with quilt classes, they
seem to fill up very quickly and if you're looking to get into a class
that is 2 weeks away, you might have some problems.  That being said,
is there a specific type of quilting you're interested in?  Machine?
Hand? Beginner level? Advanced? Crazy quilting? Hands-on or lecture?
Will you be able to provide your own machine, or do you need one
provided for you? The variety of classes out there is staggering, so
any extra information you can provide will help greatly.

Time Out New York had an issue about getting a hobby about one year
ago.  Inside there was a listing for where to take quilting classes. 
not much help, but something.

You might get better results by contacting one of the New York Quilt
Guilds or Quilt Stores.

http://hometown.aol.com/ldrshbbyqsis2/quiltguilds/newyork.html
http://www.quilt.com/Stores/NorthEast/NewYork.html

Good luck.

czh