What does ":" mean in the sentence, 'Nor~~~'. Could you explain it to me?
Everyone knows a young person who is impressively “street smart” but does poorly in school. We think it is a waste that one who is so intelligent about so many things in life seems unable to apply that intelligence to academic work. What we don’t realize is that schools and colleges might be at fault for missing the opportunity to draw such street smarts and guide them toward good academic work. Nor do we consider one of the major reasons why schools and colleges overlook the intellectual potential of street smarts: the fact that we associate those street smarts with anti-intellectual concerns. We associate the educated life, the life of the mind, too narrowly with subjects and texts that we consider inherently weighty and academic.