Nod y system yw cynorthwyo ac annog gwella drwy gydweithio, nid labelu na chreu tablau cynghrair amrwd.  Y nod yw helpu ysgolion i weld pa ffactorau sy’n cyfrannu at gynnydd a llwyddiant, a pha feysydd y dylid canolbwyntio arnynt i wella ymhellach.
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.