To address these concerns, we carried out additional validation of this data on pupils eligible for free school meals with local authorities.
Er mwyn mynd i’r afael â’r pryderon hyn, fe wnaethom gynnal dilysiad ychwanegol o’r data hwn ar ddisgyblion sy’n gymwys i gael prydau ysgol am ddim gydag awdurdodau lleol.