Ym mis Gorffennaf 2012, sefydlwyd Grŵp Adolygu annibynnol gan y Gweinidog Addysg a Sgiliau ar y pryd dan gadeiryddiaeth yr Athro Sioned Davies, er mwyn darparu cyngor ar wella darpariaeth Cymraeg ail iaith yng Nghyfnodau Allweddol 3 a 4. Prif amcan y Grŵp oedd  ystyried pa newidiadau y dylid eu gwneud i alluogi mwy o ddysgwyr i ddefnyddio’r Gymraeg tu allan i’r dosbarth, yn eu cymunedau ac yn eu gwaith yn y dyfodol.
In July 2012, the former Minister for Education and Skills established an independent Review Group, chaired by Professor Sioned Davies, to provide advice on improving Welsh second language provision at Key Stages 3 and 4. The main objective of the Group was to consider what changes should be made to enable more learners to use Welsh outside the classroom, in their communities and in future employment.