This survey has closed. We are extremely grateful to the great many (approximately 30,000!) students who participated in this survey, and to the great many people who helped. We have begun the long process of confirming that everyone on the lists of students who were invited to respond, as well as everyone on the lists of students who responded, satisfied the survey’s respondent eligibility criteria. When that process is complete, we will then begin analyzing the data. Thank you again to everyone who helped us get to this point!