NALP's annual survey of each law school's graduating class is known as the ERSS, or Employment Report and Salary Survey.
Background on Changes in Demographic Questions for Class of 2014: NALP Bulletin article by Mark Goldfarb (February 2014) on Sexual Orientation and Gender Identity Additions to the ERSS Survey (PDF)
Information about NALP's ERSS software
Graduate Surveys: Class of 2015
Graduate Survey: Class of 2016