The timetables for the examinations are arranged by the WJEC and other examining groups and Headteachers are notified of these and the subsequent examination results directly by those groups.
Mae amserlenni arholiadau yn cael eu trefnu gan CBAC a grwpiau arholi eraill a hysbysir penaethiaid ynghylch yr arholiadau hyn a’r canlyniadau yn uniongyrchol gan y grwpiau hynny.