A pupil looks up to the sky at Mcedo Beijing School in Nairobi, capital of Kenya, April 11, 2013. Mcedo Beijing School is located in Mathare slum, one of the largest slums in Kenya and home to about 500,000 residents. The school offered mathematics, English, Swahili, science and some other courses for over 600 students living in three nearby regions. Pupils got free lunch in the school thanks to the United Nations World Food Programme. (Xinhua/Meng Chenguang)

A girl takes notes during a mathematics course at Mcedo Beijing School in Nairobi, capital of Kenya, April 11, 2013. Mcedo Beijing School is located in Mathare slum, one of the largest slums in Kenya and home to about 500,000 residents. The school offered mathematics, English, Swahili, science and some other courses for over 600 students living in three nearby regions. Pupils got free lunch in the school thanks to the United Nations World Food Programme. (Xinhua/Meng Chenguang)

Pupils have a mathematics course at Mcedo Beijing School in Nairobi, capital of Kenya, April 11, 2013. Mcedo Beijing School is located in Mathare slum, one of the largest slums in Kenya and home to about 500,000 residents. The school offered mathematics, English, Swahili, science and some other courses for over 600 students living in three nearby regions. Pupils got free lunch in the school thanks to the United Nations World Food Programme. (Xinhua/Meng Chenguang)

A pupil draws in a classroom at Mcedo Beijing School in Nairobi, capital of Kenya, April 11, 2013. Mcedo Beijing School is located in Mathare slum, one of the largest slums in Kenya and home to about 500,000 residents. The school offered mathematics, English, Swahili, science and some other courses for over 600 students living in three nearby regions. Pupils got free lunch in the school thanks to the United Nations World Food Programme. (Xinhua/Meng Chenguang)

Pupils play on the schoolyard at Mcedo Beijing School in Nairobi, capital of Kenya, April 11, 2013. Mcedo Beijing School is located in Mathare slum, one of the largest slums in Kenya and home to about 500,000 residents. The school offered mathematics, English, Swahili, science and some other courses for over 600 students living in three nearby regions. Pupils got free lunch in the school thanks to the United Nations World Food Programme. (Xinhua/Meng Chenguang)

Pupils gather to welcome reporters at Mcedo Beijing School in Nairobi, capital of Kenya, April 11, 2013. Mcedo Beijing School is located in Mathare slum, one of the largest slums in Kenya and home to about 500,000 residents. The school offered mathematics, English, Swahili, science and some other courses for over 600 students living in three nearby regions. Pupils got free lunch in the school thanks to the United Nations World Food Programme. (Xinhua/Meng Chenguang)

Pupils have a mathematics course at Mcedo Beijing School in Nairobi, capital of Kenya, April 11, 2013. Mcedo Beijing School is located in Mathare slum, one of the largest slums in Kenya and home to about 500,000 residents. The school offered mathematics, English, Swahili, science and some other courses for over 600 students living in three nearby regions. Pupils got free lunch in the school thanks to the United Nations World Food Programme. (Xinhua/Meng Chenguang)