An average of 4.0% of half-day school sessions were recorded as unauthorised absence for pupils aged 5 to 15 over the latest week, higher than 3.7% the week before.
Dros yr wythnos 4 Mai i 7 Mai nid oedd llawer o wahaniaeth rhwng canran y merched a'r bechgyn a oedd yn bresennol yn yr ysgol.