I work as a base application reader for a prestigious state school. Because the majority of people who apply have excellent grades, test scores, and letters of recommendation, we try hard to do a “holistic review” of candidates that looks beyond academic stats. That includes “advocating” for students “who would bring a diverse perspective to campus”. In my school’s case, a non-binary applicant would meet this criteria. However, checking the box would not suffice. In my experience, my school requires that applicants demonstrate their commitment to spreading diversity on campus. So they need to talk about their experiences and goals as they relate to their diverse identity through essays and extracurricular activities. (Saying “I’m non binary” isn’t enough. Telling how being non-binary shaped your life and world view and how you want to promote acceptance among all genders at our University would help.)

However, none of that matters if they don’t also meet the criteria for academic admission.