Pupils entitled to free school meals have been less likely to attend school, with the gap being an average of 5.1 percentage points between 23 to 27 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 5.1 pwynt canran rhwng 23 i 27 Mai 2022.