For the purposes of the post-primary school transport scheme, the country has been divided into catchment areas, each of which has its own post-primary centre. Recognised post-primary pupils who live at least three miles from the post-primary centre of the catchment area in which they reside, are eligible for transport to that centre under the terms of the school transport scheme. Eligible pupils who wish to attend a post-primary centre other than their appropriate one may be allowed transport from within the catchment boundary of the centre being attended, subject to there being spare accommodation available on the service and provided no additional cost is incurred either by way of a larger bus or an extension of service. The children in question may avail of free transport to the school of their choice, St. Joseph's college, Summerhill, Athlone, from the catchment boundary of the centre attended, subject to the conditions outlined above.