Nod y system yw rhoi cefnogaeth ac annog gwella ar y cyd, yn hytrach na gosod labeli neu lunio tablau cynghrair moel. Mae'n broses sy'n rhoi ysgolion mewn sefyllfa sy'n eu galluogi i bennu'r ffactorau sy'n cyfrannu at eu cynnydd a'u llwyddiant ac i ddeall pa feysydd y mae’n rhaid canolbwyntio arnynt i sicrhau eu bod yn parhau i ddatblygu.
The system is about providing support and encouraging collaborative improvement and is not about labelling or creating crude league tables.  It is about putting schools into a position that enables them to identify what the factors are that contribute to their progress and achievement or which areas to focus on to achieve further development.