Some of the difference may be explained by the provision of Welsh Government funding to recruit extra staff to support pupils during the coronavirus (COVID-19) pandemic.
Mae’r gwahaniaeth yma yn rhannol o ganlyniad i’r ddarpariaeth o arian ychwanegol gan Lywodraeth Cymru i recriwtio staff ychwanegol i helpu disgyblion yn ystod pandemig coronafeirws (COVID-19).