The percentage of half-day sessions missed by secondary school-aged pupils has nearly doubled to 12.0% between 2018/19 and 2023/24.
Mae canran y sesiynau hanner diwrnod a gollwyd gan ddisgyblion oed ysgol uwchradd bron wedi dyblu i 12% rhwng 2023/24 a 2018/19.