A measured high IQ does not a genius make, particularly when young. It just means your mind is quick and possibly great on memory. all this helps to pass tests. It still does not make you a genius.
A gtenius is someone who looks at a mass of data and sees what no one else sees. He brings new insight into the world. even then it is typically not recognized but that is not so important.
What is important is the insight even if it remains only his. After all Ulysses saw a path to enter Troy when no one else did. And Einstein had TWO wonderful insights.