"What creates wide gaps in achievement in math (and many other subjects) in minority students is lower expectations for success." I found this sentence frustra

"What creates wide gaps in achievement in math (and many other subjects) in minority students is lower expectations for success." I found this sentence frustrating. It was simple-minded to an extreme, neatly finding a solution to fit all minorities. Minorities in the middle class, e.g., may have a completely separate set of problems from minorities in poverty circumstances. Recent immigrant minorities may face a different set of circumstances from second, third, fourth, etc. generation minorities. The author's message is essentially "try harder, think positive". Unfortunately it does not address the different nuances of being a minority.