When reading a resume, it's important to remember that often one attributes group effort to oneself. That's just the generally agreed upon etiquette for resumes

When reading a resume, it's important to remember that often one attributes group effort to oneself. That's just the generally agreed upon etiquette for resumes. So a programmer who says 'Designed and developed a Ruby web app' probably did not do it herself from start to finish--she worked on a team with 20 others. That is meant to be understood in resume-speak and isn't misleading. If I were reading that, I would infer that he assisted a professor in preparing/reviewing material, lead discussions (perhaps in study sessions or small groups), and suggested or wrote exam material on behalf-of and with the professor's approval.