On Sept. 22, the College's Ad Hoc Committee on Grading Practices and Assessment emailed a survey on grading policy to every undergraduate student who has completed at least one course at Dartmouth. The survey, which closes on Oct. 23, will be used by the committee to inform a winter report on grading and assessment policy, according to committee co-chairs anthropology professor Zaneta Thayer and government professor Jeffrey Friedman.The committe…