Mapuche Indian children attend a lesson conducted in their Mapudungun language inside a "Ruka" (house) at a "Casa Piedra" (stone house) public school near Tirua town, some 750 km (466 mile) southwest of Santiago, December 1, 2010. The Casa Piedra public school has built a "Ruka" to meet the learning needs of Mapuche students who are educated on their legends, language and culture. Picture taken December 1, 2010. REUTERS/Jose Luis Saavedra (CHILE - Tags: EDUCATION SOCIETY)