Since its founding in 2013, Code.org has been intertwined with Microsoft. Co-founder and CEO Hadi Partovi, a former Microsoft intern and then engineer, launched Code.org so every child in the U.S.

Hadi Partovi made his fortune as a cofounder of Tellme Networks, sold to Microsoft for some $800 million in 2007, and with smart investments in Dropbox, Facebook and Airbnb. For the past four years, ...