15.5% (r) of half-day sessions were missed by year 11 pupils, compared with 9.4% of half-day sessions missed by year 7 pupils, in 2022/23
Cafodd 15.5% (r) o sesiynau hanner diwrnod eu colli gan ddisgyblion blwyddyn 11, o'i gymharu â 9.4% o sesiynau hanner diwrnod a fethwyd gan ddisgyblion blwyddyn 7, yn 2022/23