Yn ôl yr adolygiad o Safonau Proffesiynol, Rheoli Perfformiad a Datblygiad Proffesiynol, a gafodd ei gwblhau yn 2010, mae’r ffordd y mae'r trefniadau ar gyfer y Cyfnod Ymsefydlu a Datblygiad Proffesiynol Cynnar (EPD) yn cael eu dehongli, a'u rhoi ar waith, yn ogystal ag ansawdd y trefniadau hynny, yn amrywio'n fawr ledled Cymru. Er bod llawer o ysgolion ac Awdurdodau Lleol yn sicrhau bod Athrawon Newydd Gymhwyso (ANG) ac athrawon EPD yn cael profiad o ansawdd uchel, roedd yr adroddiad yn dangos hefyd nad oedd anghenion athrawon sydd newydd ddechrau ar eu gyrfa yn cael eu nodi na'u bodloni'n ddigonol mewn ysgolion ac Awdurdodau Lleol eraill.
The review of Professional Standards, Performance Management and Professional Development that was completed in 2010 revealed that the interpretation, quality and implementation of the arrangements for Induction and Early Professional Development (EPD) varied widely across Wales. It also showed that although many schools and Local Authorities ensured a high quality experience for their Newly Qualified Teachers (NQTs) and EPD teachers, there were others where the needs of beginner teachers were not identified or addressed sufficiently.