By applying these cut-off dates to the linked WDSD, PLASC and EOTAS datasets it was possible to develop an estimate of residents of statutory school age who were in state education in 2021.
Trwy gymhwyso’r dyddiadau cau hyn i setiau data cysylltiedig WDSD, CYBLD ac EOTAS, roedd yn bosibl datblygu amcangyfrif o drigolion o oedran ysgol statudol a oedd mewn addysg ffurfiol yn 2021.