This April 24, 2012 photo shows students raising their hands to answer their teacher's questions in front of a portrait of Ernesto "Che" Guevara, the Argentine-born co-founder of the Cuban revolution, at the Jose Maria Heredia Vocational Arts school in Santiago de Cuba, Cuba. The school is dedicated to educating musically- talented eight to 18 year-olds, some of whom come from surrounding areas. The Cuban government provides free tuition, room and board. Students are allowed to return home every two weeks to visit their families.(AP Photo/Kathy Willens)

Associated Press
This April 24, 2012 photo shows students raising their hands to answer their teacher's questions in front of a portrait of Ernesto "Che" Guevara, the Argentine-born co-founder of the Cuban revolution, at the Jose Maria Heredia Vocational Arts school in Santiago de Cuba, Cuba.  The school is dedicated to educating musically- talented eight to 18 year-olds, some of whom come from surrounding areas. The Cuban government provides free tuition, room and board. Students are allowed to return home every two weeks to visit their families.(AP Photo/Kathy Willens)
This April 24, 2012 photo shows students raising their hands to answer their teacher's questions in front of a portrait of Ernesto "Che" Guevara, the Argentine-born co-founder of the Cuban revolution, at the Jose Maria Heredia Vocational Arts school in Santiago de Cuba, Cuba. The school is dedicated to educating musically- talented eight to 18 year-olds, some of whom come from surrounding areas. The Cuban government provides free tuition, room and board. Students are allowed to return home every two weeks to visit their families.(AP Photo/Kathy Willens)
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