It’s late afternoon in the Los Angeles suburb of Torrance, and Renee Tanaka isn’t worried about where her teenage son Ryan or his friends are. They’re in the backyard, safely gambling the day away. At ...

Poker isn't allowed in school, so eighth grade would-be card sharks ditch telltale chips, gather at lunch and use push-ups as currency: "I see your five push-ups and raise you 15." Faced with the same ...