Area drug lord Darryl 'Cootie-Fish' Jackson gave an 'A' rating to single-parent families Monday. 'A child raised by one parent is more likely to rebel,' Jackson said. 'For me, that's great for business.' He also commended the nation's moral decay in recent years. 'I applaud this decay, and I hope to fill this moral vacuum with drugs.' The 'A' award was presented at the corner of Third and Dempsey near Fat Sam's Liquors. Receiving 'F' grades from Jackson were the St. Louis Police Department, Sesame Street and NBC, for the network's 'The More You Know' public-service messages. 