Partnered with Complementary Schools Association of Kenya (CSAK), the largest Association formed by informal schools in urban informal settlements, provided us an opportunity to work closely with hundreds of slum schools across Kenya. While more than half of the children in slums study in informal schools, less than 40% of their teachers are trained. Most its schools are in Nairobi (589 member schools), which also has the largest slum population in Kenya and some of the largest slums in East Africa. That's why we are starting our teacher training program from here.