80% of the inhabitants of Nairobi live on only 5% of the living space in slums, that is several million people who live cramped in small corrugated iron huts, without water connection or sanitary facilities between garbage and open sewers. Some of them have taken it upon themselves to provide the children in their neighborhood with a school education and have founded schools on their own initiative. Almost 160 teachers are currently teaching almost 4200 children at the 14 Kenyan Nyendo schools. These teachers earn on average about 1 € per day. During the four months of vacations, which are required by law in Kenya, there is no salary at all. Of the more than 4000 school children, only a good 1200 can pay the school fees of about 7.50 € per month. If you go to any supermarket, however, the food prices are not much lower than in our country. Some of the schools have too few desks, no or completely inadequate sanitary facilities, and rooms that are far too small and in which several classes have to be taught in parallel, almost in the dark. A lot can already be achieved there with small sums of money. On the other hand, our students are very impressed by the social commitment and personal dedication of the teachers there and especially the principals. Even though there are hundreds of other self-help schools in the slums of Nairobi alone, as the size of the Nyendo network continues to grow, it would be easily conceivable to become active elsewhere in the world.