General view of an empty classroom at St Mary Primary School in Nairobi, Kenya, Tuesday Sept. 6, 2011, because the national teacher strike. The chairman of the Kenya National Union of Teachers says 200,000 teachers in schools have started a strike to protest the diversion of funds meant to hire more teachers and ease classroom overcrowding, in a move expected to affect more than 10 million children.(AP Photo/Khalil Senosi)