Chicken’s Ball, the world’s oldest and longest-running PTA fundraiser, celebrates its 70th year beginning Sunday in San Carlos. The preview matinee show is at 2 p.m. at the Chestnut Middle School, 828 Chestnut St. Other performances take place the next two weekends. This year’s theme is “One World,” and is patterned after the 1915 World’s Faire. For more information, visit www.2010chickensball.org.