From the Achievement Gap to the Education Debt: Understanding Achievement in U.S Schools By Gloria Ladson-Billings

What does Ladson-Billings mean by the education debt? What are the different components of it? [Note, Ladson-Billings is talking about way more than funding, so if you're only talking about money, you have not understood the whole article] [at least two paragraphs; make clear that you understand what Ladson-Billings is talking about]