I am listing 1 place below which offers a program to sponsor a child and provide him/her with an education.

Homeless Children International is an organization I worked with in 2003, where I visited, taught, and played a lot of soccer in a Kenyan elementary school. Originally HCI-Kenya began because of 1 man who decided to reach out to the street children of Nairobi. Most of these children were addicts living in slums, and he helped them through recovery and sent them to school. I remember walking to the marketplace with an 8-year old student and she asked me if I smoked cigarettes or sniffed glue. I said no. She said, "That's good. I quit all that when I was 5."
Due to the volatile nature of recovery the man who started HCI decided to build a place far away from the city, from temptation, from gangs, from distraction. He chose the foothills of Mt. Kilimanjaro. It is here where I fell in love with Africa.
Although the website is out of date and a little bit shoddy the program is alive and well and continues to grow in very creative directions. It is too bad they do not document this via the world wide web (However I do receive letters that keep me updated). There are many kids who pray daily to be sponsored (believe me I've heard the prayers!) so if you are interested, here you go...

www.homelesskids.org