Reigning-in the cost of higher education. We need a more sustainable model. This article outlines some of the problem. The other obvious approach is to leverage technology to scale-up access to education, like MOOCs.
Early childhood: the vitality of education at a young age (reference book: The Sandbox Investment)
Foreign language: high school is too late. Start in elementary school.
English: substantially broaden the scope of the curriculum to include non-fiction works.
Let teachers focus on teaching. Provide additional grading support.
Charter schools. Need to learn more about details and variations.
Shorten and intensify the school day; provide additional programs to help students outside the formal classroom experience, but don't force teachers into the role of de-facto baby sitters by drawing out the school day.