Holydays of Obligation, which are days of special worship and celebration, are a valuable expression of the ethos of a Catholic school. The decision about whether or not a school remains closed on Holydays of Obligation rests with the Trustees/Patron of the school. For schools in the Archdiocese of Dublin the decision is delegated to each Board of Management acting in consultation and in co-operation with other Boards of Management in the area. Should a Catholic school decide to open for the instruction of pupils on Holydays of Obligation, the school community is encouraged to attend Mass within the school day, where feasible. The opportunity should be availed of to provide good Catechesis for preparation and celebration of the feast.