Students practice writing Chinese characters during a second grade class taught exclusively in Mandarin Chinese at Broadway Elementary School, part of the city of Los Angeles' public school system, January 31, 2013 in Venice, California.  Broadway Elementary is one of a growing number of public schools to offer a dual-language immersion program in which students learn in two languages with the goal of becoming academically proficient in both. Students at Broadway spend half of the day learning only in Chinese and the other half only in English to simultaneously build proficiency in both languages.  AFP PHOTO Robyn BECK        (Photo credit should read ROBYN BECK/AFP/Getty Images)