Pupils entitled to free school meals have been less likely to attend school, with the gap being an average of 5.9 percentage points between 9 to 13 May.
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 5.9 pwynt canran rhwng 9 i 13 Mai 2022.