Missing education is a welfare concern as those children are not able to reach their potential, or may not be in an environment where their welfare is prioritised.
Mae colli addysg yn bryder lles gan nad yw'r plant hynny'n gallu cyrraedd eu potensial, neu efallai na fyddant mewn amgylchedd lle mae eu lles yn cael ei flaenoriaethu.