Work in both sorts of special school has its own particular difficulties. One great drawback is the impossibility of adequate classification. In a small three-class centre, there will be children from five years old up to sixteen years. That, of course, in physically defective schools means that the work usually divided among all the classes of an ordinary infant school must be done in the lowest class, the second class must take the work of standards I. to III., while the highest class must take that of standards IV. to VII. It is true that the special schools have a great advantage over ordinary schools in that the classes never contain more than twenty-five children, but even granted the small numbers, the need for taking several groups in a class makes the work very exhausting. The more successful the teacher, that is to say, the more truly she draws out the individual powers of each child, the harder does her work become, for she tends more and more to have a class of children working at varying stages. In the mentally defective schools it is not possible to reach the work of the higher standards, so that there is not the _same_ difficulty, but there is the even greater one of dealing with different standards of defect, instead of different standards of attainment. Another difficulty encountered in the physically defective schools is the interrupted school-life. Children will frequently drop out for three months, six months, or a year at a time in order to have some operation performed in hospital, or to go to a convalescent home, or because of an attack of illness. Both branches of the special schools are faced with the peculiar difficulty of the "spoilt" child--the lame girl who, by reason of her helplessness, has been indulged and waited on by the healthy members of her family; the ill-balanced boy whose brain-storms have been so disturbing that any opposition to his will has been shirked. It must not be thought that these children are in the majority at special schools, but they do form a certain proportion of the children there; they give much trouble, and they call for a great deal of tact and patience. Patience is so continually needed in special-school work that women who are not particularly patient would find themselves definitely unfit for it. Indeed, although patience and the hopeful spirit do not figure on the list of qualifications demanded of candidates, they might well head it, for most certainly an irritable or despondent woman could not find any work for which she was more unsuited, or in which she was more likely to be miserable and unsuccessful.