The most widely known of his developments was the National Teacher Corps, which was based on his intern program in Milwaukee. He is an adviser to alternative certification programs around the country and has developed effective ways of bringing more minorities into teaching. His interview for selecting teachers and principals who will be successful with children in poverty is used in cities throughout the country. Currently, his developmental efforts are focused on helping to resolve the crisis in urban schools serving 12 million at-risk students by helping these school districts “ grow their own “ teachers and principals.