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Executive Team
Gregg Fleisher

Gregg Fleisher


As President, Gregg serves as NMSI's key liaison with senior school district leaders, state and national STEM education partners and public and private funders, while continuing to provide strategic direction and oversight of NMSI’s core programs to ensure program fidelity and sustainability.
“We have changed the life trajectory of more than 1.5 million students and I dream of the day that we are serving even more of the country’s schools and universities, especially students who historically have been underserved in education and underrepresented in STEM fields.”
Gregg started his career as an auditor and actuary, but found his true passion as a math teacher. He taught high school math for 14 years in the Dallas Independent School District, where his work at the district level led to unprecedented student performance in Advanced Placement calculus, particularly among traditionally under-served students. 
In 2000, Dallas philanthropist Peter O’Donnell asked Gregg to lead the nonprofit Advanced Placement Strategies, where he successfully implemented what is now known as NMSI’s College Readiness Program in more than 70 districts across Texas. The success of AP Strategies was part of the momentum that led to the formation of NMSI as a public-private partnership in 2007.
Under Gregg's leadership, NMSI’s programs have grown to reach more than 1,000 high schools and 45 universities, and are producing measurable and lasting results for more than 50,000 teachers and 1.5 million students across 40 states.  Fleisher serves on the Board of Trustees for the College Board and Head Start Greater Dallas and on the Education Advisory Council for code.org.
Gregg holds a Bachelor of Arts in accounting from the University of Illinois at Urbana-Champaign.