Ers hynny, mae Adroddiad y Prif Arolygydd dros Addysg a Hyfforddiant ar gyfer 2010-11, a gyhoeddwyd ar 31 Ionawr 2012, wedi tynnu sylw at union raddau’r anhawster gydag asesiadau athrawon. Rwyf hefyd wedi trafod y mater hwn yn bersonol gyda’r Prif Arolygydd yn ddiweddar. Yn ôl ei Hadroddiad hi, roedd agweddau ar yr asesu yn wan mewn bron hanner y 238 o ysgolion cynradd a arolygwyd o dan y Fframwaith Arolygu Cyffredin, a gafodd ei gyflwyno yn 2010. Ym marn Estyn, nid oedd yr asesiadau a gynhaliwyd ar ddiwedd y cyfnodau allweddol yn ddigon manwl gywir mewn oddeutu chwarter o’r ysgolion hynny.
The Chief Inspector for Education and Training’s Report for 2010-11, published on 31 January 2012, has since highlighted fully the extent of the difficulty with teacher assessments. I also recently discussed this issue in person with the Chief Inspector. Her Report stated that almost half of the 238 primary schools that had been inspected under the Common Inspection Framework, introduced in 2010, had aspects of assessment which were weak. Estyn judged the end of key stage assessments to be insufficiently accurate in around a quarter of those schools.