Looking for kids' classes? NYC has tons of opportunitues for your children to learn more about anything they're interested in, be it art, sports, acting, music, cooking or even a foreign language. Luckily for them (and you!), we've put together a comprehensive guide to New York City's coolest classrooms for extracurricular learning in a variety of price ranges—everything your baby Einstein needs to be the most Renaissance kid on the block. Also new this year: Three sports hubs for kids, including a gymnastics studio at the 92Y.