During the liulf year ending January 31, 1911, there have been two groups of boys in a special class in Girard College, one group known as the "Retarded Class," the other as the "Delinquent Class." There were twenty-four boys in the Retarded Class and twenty-eight in the Delinquent Class. Retarded boys are those who have remained unduly long in a grade without promotion, the repeating having be...