% achieving five or more GCSEs / Standard Grades at 9-4 (A*-C) (or equivalent educational attainment of children between the ages of 12 and 16 years old)
% sy’n cyflawni pump neu ragor o raddau TGAU / Graddau Safonol ar 9-4 (A*-C) (neu gyrhaeddiad addysgol cyfwerth plant rhwng 12 ac 16 oed)