Back-to-school shopping has a completely different meaning at Tribeca lighting showroom Schoolhouse Electric. The 2,500-square-foot space, complete with old desks and globes, displays the Portland, Oregon company's trademark handblown glass shades with American spun-brass detailing. A few years ago, owner Brian Flaherty discovered a cache of cast-iron molds from the Depression era in an upstate New York warehouse, and he now replicates more than 100 period fixtures, from ceiling-mounted designs to hanging pendants and wall sconces. The milky-white Art Deco shapes fit as well in modern condos as they do in the prewar buildings they were designed for. Everything is made to order (starting at $100), and the knowledgeable staff is available for free local consultations throughout the five boroughs, if you prefer to be homeschooled.