Pupils entitled to free school meals have been less likely to attend school, with the gap being an average of 7.7 percentage points between 4 to 8 April.
Mae disgyblion sydd â hawl i brydau ysgol am ddim wedi bod yn llai tebygol o fynychu’r ysgol, gyda’r bwlch ar gyfartaledd yn 7.7 pwynt canran rhwng 4 i 8 Ebrill 2022.