Moving GCSE results day forward would require the overall GCSE timetable to move forward to facilitate earlier awarding.
Er mwyn symud diwrnod canlyniadau arholiadau TGAU, byddai angen i'r amserlen arholiadau TGAU gyffredinol ddechrau'n gynt er mwyn hwyluso'r broses o ddyfarnu'n gynt.