It has been called many names: Continuous Progress Format, Advancement Based on Competency (ABC), Continuous Progress Schools, and Continuous Progress Education. The idea of "Continuous Progress" refers to academic and developmental growth of students in a multi-age program. Students learn new materials as they are ready, regardless of their age, and teachers help them advance as far as they are able. The students progress at their own pace and begin each new year where they left off the year before. Since a Continuous Progress classroom has students working at various levels, each student must take responsibility for his or her own learning (North Central Regional Educational Laboratory, n.d.).