If I move to Nairobi, who are the ISPs that are reliable and how many major providers are there in the Kenyan market?

If I move in to Nairobi, what channels should I take to Identify the best schools that my children can go to? I have a kid in sixth garde and one in junior high. Any advice?

I need to know the factors that I have to consider before selecting where to move-in in Nairobi, Kenya.