There were 6,459 pupils (6.5%) in infant classes of over 30 pupils in January 2023, up from 5,992 pupils (6.0%) in February 2022.
Roedd 6,459 o ddisgyblion (6.5%) mewn dosbarthiadau babanod o dros 30 o ddisgyblion ym mis Ionawr 2023, i fyny o 5,992 o ddisgyblion (6.0%) ym mis Chwefror 2022.