The gap in the average SWEMWEBS score between those from low and high family affluence has narrowed, but only due to a deterioration in the score of those from high family affluence.
Mae’r bwlch yn sgôr cyfartalog SWEMWEBS rhwng y rhai o olud teuluol isel ac uchel wedi lleihau, ond dim ond oherwydd dirywiad yn sgôr y rhai o olud teuluol uchel.