The collection of this data was suspended at the start of the coronavirus (COVID-19) pandemic in March 2020 and no data is available for the school years 2019/20, 2020/21 and 2021/22.
Cafodd y gwaith o gasglu'r data hwn ei atal ar ddechrau pandemig y Coronafeirws (COVID-19) ym mis Mawrth 2020 ac nid oes data ar gael ar gyfer blynyddoedd ysgol 2019/20, 2020/21 a 2021/22.