School closures between March and August 2020 and January to March 2021 due to the pandemic are likely to have had an impact on the figures in 2019/20 and 2020/21.
Fe fydd cau ysgolion rhwng Mawrth ac Awst 2020 ac Ionawr i Fawrth 2021 yn debygol o fod wedi cael effaith ar ystadegau 2019/20 a 2020/21 a gyflwynir yn yr adroddiad hwn.