I am just completing a Sewing Level II class at 3rd Ward, an arts organization in Brooklyn, New York.
First of all, the space and class selection is great! They are offering a dozen different sewing and fashion courses and house the beginnings of a fully outfitted jewelry studio, a wood and metal shop, photo studios, a professional digital media lab, and lots of other stuff. They also semi-recently joined forces with Etsy, housing their craft classes in printmaking, embroidery, and a workshop on creating your own sandals.
My sewing class is taught by Tracey Toole, an etsy shop owner whose teaching style is relaxed, easy going, and definitely informative. We are currently constructing a day to day handbag, which may seem pretty complicated, but Tracey makes it all seem easy and fun. I've learned a lot through this project based class, and am definitely using the bag every single day!
You can check out 3rd Ward's full class listings at www.3rdward.com/classes/