Old news: my high-school (in the Florida Panhandle Bible Belt, no less) was using BCE/CE back in my freshman year (2000). We all thought it was stupid then, as fourteen-year-olds, because it didn't change the counting, just the acronym—which is why BCE/CE are actually not very common these days in the US. You much more commonly see "years before present" today, in hard-science contexts, and culturally-specific timelines (often dynastic) in histories, though BC/AD seem thoroughly entrenched at large.