THE VESTIBULE SCHOOL controlled conditions for a comparatively extensive period of time. Vestibule schools may be divided into two general kinds, the office vestibule and the factory vestibule. Both schools have the same purpose. However, there are likely to be considerable differences between them in equipment and size, and consequently in method. Each of these types of vestibule schools will therefore be considered separately. THE OFFICE VESTIBULE SCHOOL In describing the office vestibule school, it is unneces sary to launch out into theory. One need only point to the office training school of the Larkin Company of Buffalo, one of the first and most successful schools of the kind in the country, to see a complete example of the methods and results of such a school. (See report of the Committee on Office Training Schools, J. H. Puffer, chairman, in the fourth and fifth annual Bulletins of the National Association of Corporation Schools.) In general, the vestibule school is built around those classes of work which are most characteristic of the par ticular office which the school is intended to serve. The following classes of work are typical of almost all large offices: Typing Correspondence Counting-machine operating Filing Bookkeeping Messenger service. Each class of work is taken up separately by a group of new workers. Let us suppose, now, that a female appli