In a New York Times op-ed published Wednesday, Hillary Clinton described her plan for helping America’s poor: Raise the minimum wage, expand Low Income Housing Tax Credits and emphasize aid for minority communities.

What the op-ed didn’t mention was much of a plan to improve the country’s K-12 schools, which currently pass along economic disadvantages from one generation to the next. A wide gap still separates students living in poverty from their middle- and upper-class peers.