Becoming a teacher needed having a good powerful friend?

Plenty of examinations anywhere around in Japan. I found an interesting one that would indicate how better you can check train's connections by official time table. People seem to love being certificated even by a joke-like exam.

Becoming a school teacher in Japan first requires receiving lessons of teaching subject(s) and of education theory and practice, mostly offered by universities. The graduates generally need to take at least one examination at the prefectural level. The examination results are judged by the prefectural education board to check the candidates pass the necessary level of knowledge. Some cities give more importance to their personality than their scores.

Here is bad news: some teachers did not pass the required score at the examination but were able to make it, according to media, because their "friend(s)" were influential to the personnel affairs of these boards. Money must have talked, and threat within the boards was pointed out. 

cannot conclude this post with no idea.