The number of students receiving subsidized lunches rose to 21 million last school year from 18 million in 2006-7, a 17 percent increase, according to an analysis by The New York Times of data from the Department of Agriculture, which administers the meals program. Eleven states, including Florida, Nevada, New Jersey and Tennessee, had four-year increases of 25 percent or more, huge shifts in a vast program long characterized by incremental growth.
