Every person alive is intelligent although not in the same areas. Just because you do poorly in school proves nothing neither does doing well. Standardized testing (including IQ tests) is the most ridiculous form of gauging intelligence that has ever been used.

You can score 80 on an IQ test and still be one of the of most intelligent people when it comes to life skills, inventing, interpreting politics, etc.

We are taught standardized material in school, we are not taught to work on our strengths or interests. If we were, people would be much happier and society would be far more decent.