We like the way you've incorporated the "H" and "K" into a fin type design -- very unique. But the color choices are a bit bland and boring. Is there a way that you could make them stand out a bit more? Perhaps incorporate different shades or find a way to add the orange as a pop of color.
As for the shark + graduation cap, that interpretation is too literal for what we are going for. Similarly, we're a company that has multi-millionaires and business moguls come speak and that direction is too kid-like for what we need.