This article presents the results of a survey conducted in 2010 of over 3,300 administrators and teachers in Catholic elementary and secondary schools nationally about their understanding of the meaning of the term "Catholic identity." The survey was conducted in the fall of 2010 in anticipation of a national conference on the Catholic identity of Catholic elementary and secondary schools at The Catholic University of America, October 2-4, 2011. The vast majority of respondents viewed the school's culture or faith community as the most important component of its Catholic identity. The longer the teacher or administrator worked in Catholic schools, the higher the rating they gave to the essential nature of the school's faith community to its Catholic identity. Other aspects of Catholic identity that received high ratings were prayer, the content of the religion course, who taught religion, liturgical celebrations, and participation in service. The respondents viewed the percentage of Catholic students as the least important aspect of Catholic identity. (Contains 2 figures and 7 tables.)