IQ tests are usually very narrow and only measure a certain type of intelligence, not usually emotional intelligence at all for example.

I only sat one IQ test at college and scored so low my lecturer told me I shouldn't have been on he course - he was being ironic as he used this to illustrate how inadequate a measure of intelligence these tests were. In class I studied hard and achieved good grades which I wouldn't have been able to do if I had been low intelligence. All the same I felt ashamed of this very public labelling - labels and judgements are powerful things, it takes confidence to rise above them.

A lot of things in life are down to confidence, know your own self worth and value and don't look to external validation - believe in yourself and your own strengths.