| FIRST +-+-------------- | |NORMAL AGE 6-7 | | | SECOND | +-+-------------- | | |NORMAL AGE 7-8 | | | | | THIRD | | +-+-------------- | | | |NORMAL AGE 8-9 | | | | | | | FOURTH | | | +-+-------------- | | | | |NORMAL AGE 7-8 | | | | | | | | | FIFTH | | | | +-+---------------- | | | | | |NORMAL AGE 10-11 | | | | | | | | | | | SIXTH | | | | | +-+---------------- | | | | | | |NORMAL AGE 11-12 | | | | | | | | | | | | | SEVENTH | | | | | | +-+---------------- | | | | | | | |NORMAL AGE 12-13 | | | | | | | | | | | | | | | EIGHTH | | | | | | | +-+---------------- | | | | | | | | |NORMAL AGE 13-14 | | | | | | | | | | | | | | | | |PER CENT OF | | | | | | | | |ALL RETARDATIONS | | | | | | | | +-----+---------- V V V V V V V V V ==========+====+====+====+====+====+====+====+====+======+====== | | | | | | | | | TOTAL ----------+----+----+----+----+----+----+----+----+------+------ Retarded | | | | | | | | | | 1 year | 325| 449| 500| 483| 528| 507| 366| 209| 3,367| 53.5 | | | | | | | | | | Retarded | | | | | | | | | | 2 years | 91| 170| 215| 346| 384| 324| 194| 72| 1,796| 28.5 | | | | | | | | | | Retarded | | | | | | | | | | 3 years | 33| 53| 101| 152| 219| 119| 33| 17| 727| 11.5 | | | | | | | | | | Retarded | | | | | | | | | | 4 or more | 16| 42| 74| 131| 105| 19| 3| 5| 395| 6.2 years | | | | | | | | | | | | | | | | | | | | Total | | | | | | | | | | retarded | 465| 714| 890|1112|1236| 969| 596| 303| 6,285| | | | | | | | | | | Enrollment| | | | | | | | | | each grade|3114|2680|2548|2400|2209|1856|1284| 901|16,992|