I hope you wont mind if I post in this topic even though I am not Nigerian of from your region. I only want to share my vision and experience of education in my country and I hope it maybe be useful.
Education in my European country is identical in every school. Same classes, same centralized exams. Even though there are top of schools and people figure out somehow which school is stronger, and which is weaker, everyone study with same books. The idea of education in our country is to learn basics as a secondary goal, and primary goal is to make contacts with people. Knowing useful people or useful positions, that can «help» you, that is what education about. For example my classmates: someone is in government, someone have a high position in bank, someone works airport terminal, someone is at customs. Knowing all those people give me some indirect benefits.