MAST Staff

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David Pratt

David Pratt

Program Manager

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David is a graduate of the University of Minnesota and has worked at MAST since 1992. His love for international exchange began when he was an exchange student to Brazil in high school. In the MAST office, David coordinates training for crops, equine, and livestock. Contact him if you’re interested in being a trainee or host trainer in these areas, or if you’re interested in being an international partner.

Sue Riesgraf

Sue Riesgraf

Training Coordinator

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Sue came to MAST with an extensive background in horticulture and viticulture, as well as a passion for cultural exchange that she developed through studying in Scotland, working in Australia, and serving as a Peace Corps volunteer in Niger. Sue coordinates MAST’s training opportunities in horticulture and winery. Contact her with questions about training or hosting opportunities in these areas.

Joan Petersen

Joan Petersen

Accounts Specialist

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Joan has traveled throughout the world and has a love for all things international, especially trainees and interns! Joan deals with all of the money for MAST as well as operations management. Contact Joan if you have questions about bills and payments, insurance enrollments, or evaluations and certificates.

Inês Sacchetti 

Academic Training Coordinator

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Inês was born in Lisbon, Portugal, and came to the U.S. in 2008. She is currently pursuing a masters in Higher Education, at the University of Minnesota. Inês has been passionate about international education and cultural exchange since she studied abroad in England. She also lived in Argentina and Brazil, and her close family is spread all over the world. Contact Inês for all your questions about the MAST study period.