Mae'r categori ar gyfer pob ysgol wedi'i bennu drwy ystyried amrywiaeth o ffactorau, gan gynnwys ei data perfformiad a'i gallu i wella mewn meysydd megis arweinyddiaeth, dysgu ac addysgu. Mae awdurdodau lleol a'u consortia rhanbarthol yn chwarae rôl ganolog yn y broses sy'n sbarduno pecyn arbennig o ran her a chefnogaeth ym mhob ysgol.
Each school’s category is determined by a range of factors including its performance data and capacity to improve in areas such as leadership and teaching and learning. Local authorities and their regional consortia play a central role in the process which triggers a bespoke package of challenge and support in each school.