The results of this table are summarized in Tables VIII and IX. The life-ages at the last birthday are used rather than the nearest ages, since this accords with Goddard's standardization and with the common use of the term “age.” Moreover it seems to conform to the best practise and to be less likely to lead to mistakes. Table IX also shows the school position of each boy. Since a number of the older boys had left school, in order to tabulate their school positions in reference to their life-ages it was necessary to assume that they would have continued to progress normally from the position they held when they left. The Minnesota law requires attendance at school until sixteen years of age unless before that the child graduates from the eighth grade. In this group most of those sixteen years of age and a goodly number of those fifteen years old had left school, so that their school position had to be advanced a year in the table; a very few of the 16-year-olds had to be advanced two years in the table. In all cases the school position is given relative to the first of September when the boy was of the life-age given. Either ages six or seven are taken as satisfactory for the first grade, ages seven or eight for the second grade, and so on with the other grades. TABLE VIII. TEST-AGES OF THE GLEN LAKE GROUP OF DELINQUENT BOYS ─────────┬───────────────────────────────────────────────────────────── │ Life-Ages at Last Birthday ─────────┼────┬────┬────┬────┬────┬────┬────┬────┬────┬────┬────┬────── Test-Ages│ 6│ 7│ 8│ 9│ 10│ 11│ 12│ 13│ 14│ 15│ 16│Totals ─────────┼────┼────┼────┼────┼────┼────┼────┼────┼────┼────┼────┼────── VII │ │ 1│ │ │ │ │ │ │ │ │ │ 1 VIII │ 1│ │ │ │ 1│ │ │ 1│ │ │ │ 3 IX │ │ │ │ 4│ 2│ 1│ │ 1│ │ │ 1│ 8 X │ │ │ │ 1│ 2│ 2│ 1│ 5│ 2│ 3│ 1│ 17 XI │ │ │ │ 1│ 2│ 8│ 6│ 9│ 6│ 13│ 3│ 48 XII │ │ │ │ │ 1│ 2│ 5│ 4│ 6│ 7│ 3│ 27 XIII │ │ │ │ │ │ │ │ 1│ 4│ 8│ 5│ 18 ─────────┼────┼────┼────┼────┼────┼────┼────┼────┼────┼────┼────┼────── Total │ 1│ 1│ 0│ 6│ 8│ 13│ 12│ 21│ 18│ 30│ 13│ 123 ─────────┴────┴────┴────┴────┴────┴────┴────┴────┴────┴────┴────┴────── TABLE IX. INTELLECTUAL DEVELOPMENT RELATIVE TO LIFE-AGES AND SCHOOL POSITION AMONG CONSECUTIVE DELINQUENTS AT THE GLEN LAKE FARM SCHOOL FOR BOYS OF HENNEPIN COUNTY, MINN.