Leadership
Listed on 2026-01-27
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Management
General Management, Operations Manager, Program / Project Manager
Jack Harris is the Chief Executive Officer of Junior Achievement USA and President & Chief Executive Officer of 3DE Schools.
Junior Achievement USA is the nation's largest organization dedicated to giving young people the knowledge and skills they need to own their economic success, plan for their future, and make smart academic and economic choices. In his role as CEO of Junior Achievement USA, Harris is responsible for the strategic direction and effectiveness of a national organization that reaches more than 4.4 million young people and adults a year through more than 100 operational locations across the country.
3DE Schools was founded in 2019 as a wholly owned subsidiary of JA USA, focused on systemically reengineering high school education to significantly expand economic opportunity for all students. Through integrated public-private partnerships, 3DE uses case methodology to redesign learning and create academic environments that are more relevant, experiential, and authentically connected to life beyond the classroom walls.
3DE was originally developed and incubated within Junior Achievement of Georgia, where Harris was President & CEO for 10 years, after initially joining the JA Worldwide organization as the Director of International Operations in 2002. Harris recently led the $55 million effort to expand the initial 3DE pilot to 55 schools with a focus on many of the largest school districts in the country.
With the Expanded Pilot now successfully completed, 3DE is readying for scale to 350 schools by 2031.
Jack holds a degree in Politics and a certificate in Political Economy from Princeton University and spent parts of his early career in both education and business. He lives in Atlanta with his wife Laura and their four children.
Tim GreinertTim Greinert joined Junior Achievement in 1985 as a Program Manager for Junior Achievement of Wisconsin and has held a variety of local and national positions during his career including serving as President for Junior Achievement of the Upper Midwest and Junior Achievement of Wisconsin, where he was recognized with the Charles R. Hook Award as one of the organization’s top professionals.
Tim has also served Junior Achievement USA as Chief Development Officer and most recently, as Chief Operating Officer, overseeing support for JA’s national network of JA Areas.
During his career, Tim has served in several internal JA leadership roles including JA’s Pension and Human Resources Committees as well as various community roles including the Wisconsin Governor’s Council on Financial Literacy.
Tim earned his Bachelor s degree in Business Administration from the University of Wisconsin - Oshkosh, and completed his Masters degree in Leadership and Human Resource Management through the University of Colorado - Colorado Springs.
Jackie Dant Senior Vice President OperationsJackie currently serves as Senior Vice President Operations for Junior Achievement USA. Working with JA Area Offices she provides service and support, ranging from strategic planning and board development to Capstone program management. Key responsibilities include establishing strong relationships with local JA Board of Directors and JA Area staff that will result in JA Area sustainability and strong fiscal management. Currently she is working with leaders from the field on the JA Pathways program initiative and Co-chairs the Capstone Program Steering Committee.
Both of these are key organization initiatives that will result in student growth and impact along with stronger JA Area operational standards. In 2016 she was the first JA USA recipient of the JA MVP Award, the highest honor that reflects how she exemplifies and Models Values as a Professional in the organization.
Prior to her working at the National office, she spent 19 years working in the field at JA of Kentuckiana, Inc. (Louisville, KY). While on staff she was responsible for staff development, financial and organizational operations, and program implementation. She was part of a team that managed a successful $6 million capital campaign, strategic planning, district boards, programs, operations and special events while in…
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