Mae’r corff rhyngwladol hwn wedi rhoi cyngor i Lywodraeth Cymru o’r blaen pan luniodd adroddiad pwysig yn 2014 i helpu i wella ysgolion yng Nghymru. Ers hynny, mae wedi helpu Llywodraeth Cymru i ddiwygio ysgolion.
The internationally-renowned body has provided advice to Welsh Government before, when in 2014 it produced a major report to help improve schools in Wales. In subsequent years it has also supported Welsh Government work on schools reform.