James Shelton has a storied history as a reformer. He led the education program at the Gates Foundation. He was East Coast leader of the NewSchools Venture Fund, which underwrites charters. He co-founded a company that was acquired by Edison Learning. He worked for McKinsey. He was Arne Duncan’s Deputy Secretary, where he oversaw the i3 program, which was part of Race to the Top.

Then he moved to the digital start-up 2U, which was a roaring success and is now valued at $2 Billion, according to the Los Angeles Times. 2U is the company that built the online platform for USC’s Graduate School of Social Work. The latter became the biggest graduate program in social work in the world. But the program ballooned by lowering entry standards and has become so costly that a large proportion of the USC social work staff is likely to be terminated.

Shelton explained here why he was leaving 2U, even though he loves the company.

He then ran the Chan-Zuckerberg Initiative, a major promoter of online learning and charter schools.

He left CZI last summer.

Being a reformer brings great rewards, though not necessarily to students, teachers, or public schools.