Experience of dealing with such issues in an independent school in north Wales in recent years has demonstrated that addressing these weaknesses is of paramount importance.
Mae profiad o ymdrin â materion o'r fath mewn ysgol annibynnol yn y gogledd dros y blynyddoedd diwethaf wedi dangos bod mynd i'r afael â'r gwendidau yma yn holl bwysig.