The pupil teacher ratio in January 2023 was highest in primary schools at 20.9 and lowest in special schools at 6.7.
Roedd y gymhareb disgybl athro ym mis Ionawr 2023 ar ei uchaf mewn ysgolion cynradd gyda 20.9 ac yn isaf mewn ysgolion arbennig gyda 6.7.