I like this recent policy change by my alma mater, MIT:
After careful consideration, we have decided to reinstate our SAT/ACT requirement for future admissions cycles. Our research shows standardized tests help us better assess the academic preparedness of all applicants, and also help us identify socioeconomically disadvantaged students who lack access to advanced coursework or other enrichment opportunities that would otherwise demonstrate their readiness for MIT.
We believe a requirement is more equitable and transparent than a test-optional policy.