For PLASC purposes, where a pupil is dually registered between a mainstream school and pupil referral unit (PRU) or special school, both establishments should maintain a pupil record for the pupil.
At ddibenion CYBLD, lle bydd disgybl wedi'i gofrestru mewn ysgol brif ffrwd ac uned cyfeirio disgyblion (UCD) neu ysgol arbennig, dylai'r ddau sefydliad gadw cofnod disgybl ar ei gyfer.