This week "Sunday Morning," hosted by Jane Pauley, features Tony Dokoupil's cover story on the plight of public school teachers. Plus: Tracy Smith sits down with the Backstreet Boys; Turner Classic Movies host Ben Mankiewicz talks with Irwin Winkler, producer of such classics as "Rocky" and "Raging Bull"; Martha Teichner learns the secrets of antique restoration from Colonial Williamsburg furniture conservator Leroy Graves; David Pogue goes inside the editorial offices of New York Magazine; and Mo Rocca plays cards with actress Angie Dickinson.