Mazzeo joined the Kellogg faculty in 1998, after receiving a PhD in Economics from Stanford, and earned tenure at Kellogg in 2005. His teaching responsibilities at Kellogg include the school’s core offering in Business Strategy, a fundamental introduction to management that applies economics reasoning to firm decision making. The course is taken by all Kellogg MBA students in the first term of their first year. Mazzeo is a three-time recipient of Kellogg’s Chairs’ Core Teaching, in recognition of outstanding instruction in that course. In addition, he has also taught Competitive Strategy to more senior managers in the Kellogg’s Executive Education programs.