There's a disconnect between politicians' words on education and their actions, says Arne Duncan.
We need high expectations for kids along with investment in schools, Arne Duncan says.
Secretary of Education John King reflects on his time in office.
Since Corinthian Colleges collapsed last year amid allegations of fraud, the Education Department has discharged $247 million in student loans.
The Senate plans to take up King's confirmation Monday for the short-term post.