Many of my students have English as a second language or otherwise are particularly weak in English academic prose. These students often turn to others to help them produce a paper that sounds and reads better. This, however, subverts a primary goal of my essay assignments: to understand how well a student, independent of others, can conceive an essay project, carrying out credible research for it, and compose it on their own.
Therefore, I ask all students to submit work that has not been edited by others. If you feel I cannot understand your English, then please submit your original draft plus the edited draft with these details, in full specifics not general statements: who helped, when they helped and in what ways they helped. If you are uncomfortable mentioning names, at least give me an accurate description of the individual (a cousin, a friend is NOT enough information). I will grade the original but will refer to the edited version if there is something I cannot understand.