If you only name one school and are not successful in being offered a place there, you could fail to get a place at any other school that you may also like.
O dan y system bresennol, nid yw'n anghyffredin i rai rhieni gael cynnig nifer o leoedd, ond gallai rhieni eraill beidio â chael unrhyw gynigion ar gyfer unrhyw un o'r ysgolion a ffefrir ganddynt.