Cafodd y System Genedlaethol ar gyfer Categoreiddio Ysgolion ei chyflwyno yn 2014 i bennu'r ysgolion hynny y mae angen cefnogaeth arnynt er mwyn gwella. Mae ysgolion yn cael eu rhoi mewn un o bedwar categori lliw, i ddynodi lefel y gefnogaeth sydd ei hangen arnynt.
Published today, the National Categorisation System has been introduced in 2014 to help identify schools in need of support to improve. Schools are placed into one of four colour-coded support categories to demonstrate the level of support they need.