The National School Lunch Program operates in over 94,000 schools and institutions. More than 26 million children receive meals through the program on any given day; about half of these meals are provided free of charge. The School Breakfast Program operates in approximately two-thirds of the schools and institutions that offer the NSLP, most commonly in schools that serve large numbers of economically disadvantaged children. 

The 1996 study of WIC program and participant characteristics, like PC92 and PC94, is substantially different from earlier efforts to collect data on WIC participants. PC96 employs the prototype reporting system which was developed by FNS for the collection of participant information from state WIC agencies.