You can learn a lot about a person by whose portrait they have on their wall. Bernie Sanders hung up a photo of American socialist leader Eugene V. Debs. Martin Luther King worked under a picture of Mohandas Gandhi.

And Chicago Public Schools (CPS) CEO Forrest Claypool? He chose a shot of Ayn Rand, the founder of Objectivism whose crusade against public education has helped animate a generation of market-possessed school “reformers.”

Claypool’s embrace of Rand and her uber-capitalist philosophy goes a long way in explaining why CPS came to the brink of a second teachers’ strike in four years.