School is an ideal world that teaches us nothing about reality.
As a student, we were taught to focus on upper grades, to acquire good jobs, that's one crazy advice.
I still love education, and I would advise younger ones to focus on a business or skill will chasing good grade in school.
Certificate doesn't guarantee a successful life.
I'm in love with your opening sentence... More like good at everything but nothing
Certificates are just what helps you trav opportunities should they happen to come by but then how often does this opportunities come?
Sometimes, it's you who creates these opportunities and school doesn't teach that