We thus obtain no merely subjective appreciation, but a simple statement of the actual condition of things. The only thing one must be careful about is to make allowance for irregular attendance. Backwardness in school instruction is significant only when it coincides with regular attendance. At the present time the regulations as to school attendance are very little respected. In country districts there are children who do not go to school till they are eight or nine years of age. It is not surprising that they cannot read, when no one has taught them. Allowance must also be made for long illnesses. When the absences have been considerable, their total amount must be subtracted. A child of nine, who has come to school at the age of six--_i.e._, the usual age--and who has been absent for about 250 days, should, from the present point of view, be counted as eight. The school authorities will have no difficulty in making such estimates. That is their business, and they will quickly make up their minds even in a difficult case. One will, of course, bear in mind that the number of classes differs in different schools, and that certain classes are parallel. Lastly, one must remember that a defective may, on account of his age, be placed in a class too advanced for his knowledge. This, indeed, is often the case. Exception may be taken to the rôle that we have assigned to the teachers. We may be reminded that about two years ago, when statistics concerning defectives were being collected by circular, many of the head-masters replied in a notoriously unsatisfactory manner. Even in Paris one school was stated to contain 25 per cent. of defectives, whilst not a single one was acknowledged in another in the same neighbourhood. This amounted, as M. Bédorez ironically remarked, to an average of 12 per cent.