"In my opinion Moses J was right to have regard to the differences between the funding arrangements made for special schools on the one hand and other schools on the other. In the latter case, funding is in part geared to the number of pupils actually attending the school; in the former it is in part geared to the number of pupils for whom it is anticipated the school will need to provide places. This means that places may be provided for which if, for example, a child leaves to go out of the borough, will not be utilised but the cost will be incurred."