As I explained in my reply to Parliamen tary Question No. 267 on 29 June 1999, in order to achieve maximum co-ordination of school transport services in relation to the opening and closing of primary and post-primary schools, a calendar of school days is drawn up each year by the transport liaison officer in consultation with the schools involved. Where schools fail to agree a calendar, the transport liaison officer has instruction to draw up a calendar for the area, which ensures that there is no duplication of service. All schools are given the opportunity to submit a calendar for the year before timetables are decided. The fact that a service does not operate to the school in question on certain days is in line with the operation of a co-ordinated calendar. To sanction transport services for days outside the co-ordinated calendar would undermine the co-ordination process and would also involve significant extra costs, which would not be justified. In the circumstances I cannot give the guarantee being sought by the Deputy.