In the first three years of Mint, from when it was founded to when it was sold, I can honestly say that in a sustainable way, I couldn't have worked any harder on it.
I completed the first three years of primary school in one year and was admitted to the local school the age of six directly into the fourth year, some two years younger than all my contemporaries. Sydney Brenner
But in any case, I did poorly on the tests and so, in the first three years of school, I had teachers who thought I was stupid and when people think you're stupid, they have low expectations for you. Robert Sternberg