This would mean that schools would hold six INSET days (or equivalent) per year, with the school being closed to learners on the additional INSET day.
Byddai hyn yn golygu bod ysgolion yn cynnal chwe diwrnod HMS (neu gyfwerth) y flwyddyn, gyda’r ysgol ar gau i ddisgyblion ar y diwrnod HMS ychwanegol.