Queens Community House in Jackson Heights, N.Y., doesn't advertise its free English courses, but for many years its lotteries for places in the class drew hordes that required police presence. A new system has eliminated the crowds -- and the need for cops -- but competition for spaces remains fierce: Three out of four interested applicants are turned away. "People plead and cry on the day the names are posted," says director K.C. Williams, an 18-year veteran of English-language programs. "You cannot imagine how much these immigrants want to learn English. Demand is off the charts." English classes are crowded...