John Oliver and his staff clearly did their charter school homework. On Last Week Tonight last Sunday, Oliver discussed problems with the lack of vetting of people who open charters and the lack of oversight once schools are open. He shows people plagiarizing their charter applications, others using charters as their personal ATMs, and schools closing without notice. It's not meant to be a takedown of charters. It's more of a spot-on harangue about the need to tighten charter school rules and regulations to keep the bad actors out.