"A diversity statement is a paragraph or section in institutional, department, or course language that welcomes the range of human representations including race, class, gender, religion, accessibility, and socioeconomic status. Instructors can use [a] diversity statement to set expectations for civil discourse, encouragement for varying opinions, and standards of behavior both within a course or discipline and during controversial campus events. At root, the diversity statement signals belief that all students have value and bring unique perspectives worthy of consideration."
From Yale University Poorvu Center for Teaching and Learning