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US Marines
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Marcus Lingenfelter
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Penn State
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Marcus Lingenfelter
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National Math and Science Initiative
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Marcus Lingenfelter
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College Board
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Marcus Lingenfelter
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Edmentum
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Marcus Lingenfelter
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North Dakota Innovative Education Summit June 8, 2017
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Marcus Lingenfelter
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Council for Advancement and Support of Education (CASE)
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Marcus Lingenfelter
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Harrisburg University of Science and Technology
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Marcus Lingenfelter
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