An average of 7.1% of half-day school sessions were recorded as authorised absence for pupils aged 5 to 15 over the latest week, down from 7.2% the week before.
Dros yr wythnos 17 Mai i 21 Mai nid oedd llawer o wahaniaeth rhwng canran y merched a'r bechgyn a oedd yn bresennol yn yr ysgol.