Cefais fy hysbysu ym mis Hydref 2012, yn dilyn arolwg o dan Adran 28 Deddf Addysg 2005, fod Estyn yn barnu bod angen mesurau arbennig ar Ysgol Uwchradd Llanrhymni yng Nghaerdydd.
I was notified in October 2012 that, following inspection under Section 28 of the Education Act 2005, Estyn judged that Llanrumney High School in Cardiff requires special measures.