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Graduate student assistantships encompass the positions of teaching fellow , teaching assistant , instructional assistant , research assistant , and graduate assistant . " Using someone else 's code " includes using solutions or partial solutions to assignments provided by commercial web sites , instructors , preceptors , teaching assistants , friends , or students from any previous offering of this course or any other course . Having been an adjunct , teaching assistant , and " hired gun " for over a decade , I should have been more sensitive in my choice of qualifiers . The basic course , in more institutions than mine , is often taught by adjuncts , teaching assistants , and professional " moonlighters " who , forgive me , are probably not as academically " prepared " as the full-time faculty within the specific department .