looking for good ecole maternelle in Ouaga (Ouagadougou)

Hi,
I am moving to Ouaga from Bamako with my family next month. My children are 3 and 4 and have been in ecole maternelle since creche. I think we will move to zone du bois. I would appreciate any advice on any good ecole maternelle in this area. Additionally, I will be looking for a nounou - any ideas /advice where I should begin? Thanks so much. Looking forward to Ouaga!