In most places around the country, school is beginning. This includes the nation's colleges and universities where about 2 million high school graduates will soon start college.

Yet 40% of those incoming freshmen will drop out before graduating. Many with debt, limited job prospects, and shattered confidence.

Why is this number so high? Why are some colleges succeeding in keeping kids engaged and others failing so miserably? Are there best practices? Is this simply another reflection of the economic divide in America? Is it happening at elite universities? Can we test for it, and what are the consequences if the problem goes ignored?

All of these questions are part of the new book The College Dropout Scandal by my David Kirp

My conversation with David Kirp: