Ysgol Gyfun
Heolddu Comprehensive School
Cyflawni Rhagoriaeth Gyda'n Gilydd
Achieving Excellence Together
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Subjects
Mathematics/Mathemateg
English/Saesneg
Science/Gwyddoniaeth
ICT/TGC
Geography/Daearyddiaeth
Performing Arts
PE/Addysg Gorfforol
Welsh/Cymraeg
French/Ffrangeg
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History/Hanes
Art & Design/Celf a Dylunio
Technology/Technoleg
Welsh Baccalaureate/BC
Religion/Astudiaethau Crefyddol
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