The idea forThe Baby-Sitters Clubseries originated with Jean Feiwel, an editor at Scholastic who saw the popularity of a novel calledGinny's Babysitting Joband realized there was a market for novels about babysitting. She contacted Ann M. Martin, who took the general idea of a babysitter's club, and created the characters, plots, and settings for the series. It was initially planned as a four-book series, but after the first four novels were moderately successful, Scholastic ordered two more, followed by twelve more as the series grew in popularity. By the time the sixth novel was published, the first printing was up to 100,000 copies. When publishing ceased in 2000, there had been 213 novels published in the series. Of these, Martin estimates she herself wrote from 60 to 80 of the novels.