This report draws on newly available data from the National Survey of Early Care and Education (NSECE) to describe early care and education (ECE) centers that participate in two prominent publicly-funded ECE initiatives: Head Start and publicly-funded pre-kindergarten. Although a great deal is known about Head Start programs, and there are sources of information about Public Pre-K, there has been no available data source that documents how centers participating in these publicly-funded initiatives fit within the full spectrum of center-based ECE. This report identifies the number of centers nationally that had enrollment funded by Head Start or Public Pre-K funds in 2012, and describes some characteristics of these programs. In the NSECE data, a "center" refers to all ECE services to children under age 13 years provided by one organization in a single location. An accompanying technical supplement provides details on the methodology for identifying programs as participating in these two ECE initiatives, and explains some issues pertaining to analyses of NSECE data regarding programs' participation in Head Start and Public Pre-K. [For "Identifying Head Start and Public Pre-K Participation in NSECE Data on Center-Based ECE Programs. NSECE Technical Report Supplement. OPRE Report 2015-92b," see ED564118.]