Ond un o'r gwersi o PISA yw bod angen i ni wneud llawer mwy i ymestyn ein cyflawnwyr uchaf, o'r cyfnod pontio i'r uwchradd ac ymlaen i TGAU a Safon Uwch. Rydym yn gweithio'n galed drwy Rwydwaith Seren, ond rwy'n cydnabod bod angen gwneud rhagor a byddaf yn cyhoeddi manylion pellach maes o law.
But one of the lessons from PISA is that we need to do much more to stretch our highest-achievers, right from transition to secondary through to GCSE and A Levels. We’re working hard through the Seren Network, but I acknowledge that more needs to be done and I’ll be announcing further details in due course.