er, school isn't a measuring device, it's a place to learn. you're seeming like the kinda person who does bad in school, and justifies it by saying that school is some ass-backwards place where everyone is out to get you
You're saying what it's supposed to be, not what it actually is. They assign you a number or letter. Universities don't care who you are, they just look at the numbers. 3/4ths of the trivial facts we learn at school we almost never use again in our lives. True, it gives us experience and overview of essential career paths we can take, but it's somewhat lacking practically. At our school we also need to do community service, which no one believes in. They gave 'outstanding' achievement awards to those who cheated and made up about 300 hours of their time.
Unless you count memorization as intelligence. Then there are plenty of people who can cram useless facts into their brains and recite them at any given moment and be worshiped.
EDIT: Ask any of the high-level students in any class from my school how things work. They won't be able to explain it. They just memorize specific formulas, not even understanding them. I consider intelligence the capacity to apply information to understand things better, even in unfamiliar situations.